Lucy Embick Kunz ’78 climbs onto the arm of the sofa, squats in her white sock feet and throws her whole body into the tale of her recent near-gold experience at the German Life Saving Championships.

The small-framed swimmer grabs below the arm of the sofa and demonstrates how she was perched on the block—one that was more slanted than usual—and ready to dive in.

Just then, Lucy recounts, she tipped forwards off the block, starting before the gun fired, disqualifying her from the second discipline, the combined swimming event. Lucy had already finished 12 meters ahead in the 50-meter freestyle, the first event of the three-part competition. She knew gold in her age category was within easy reach. “I would have won,” she says, squinting her blue eyes, clearly still furious with herself.

Lucy’s intensity serves her well because she is racing for more than medals: She swims for her own survival. Lucy has been fighting aggressive ovarian cancer since 2003, and she has done it, in large part, by throwing herself into competitive swimming. In a sense, every lap, every moment in the pool is a victory. As a medical physicist who knows her case confides: “The doctors say Lucy Kunz should have been dead seven years ago.”

Lucy has endured 157 days of chemotherapy, three months of radiation and 13 operations on what was once a near-perfect body. She has demonstrated pure mind over matter—winning dozens of golds and breaking an International Life Saving Organization world record in obstacle swimming with a body pumped full of toxic chemicals designed to fight off tumors. She says her greatest achievement may have been when she won the German Masters gold for the 200-meter backstroke in April 2010, about a week after her 118th day of chemotherapy.

She has done all this while grieving an unfathomable family tragedy. Her older brother, Dr. Andy Embick ’72, the one she followed to Pomona, the brilliant and restless Rhodes Scholar she had always looked up to, committed suicide just months before she was diagnosed with cancer eight years ago.

The combination of the two events launched Lucy on a journey of survival. “I never did give up. I never ever ever ever did,” says Lucy. “I have to be like the pop-up figures in comics. I’m shot down and have to get up again. If I give up swimming, I’ll give up my health and my life.”

LUCY’S LOVE AFFAIR with swimming started in kindergarten at her local YMCA in Salem, Ore., where she grew up as the third of four children. Her mother is a lawyer, and Lucy’s late father worked as an orthopedist. Lucy says the Embick children weren’t pushed to achieve. But excellence was in the air at home. She and Andy were always close, and he swam too, even though swimming was not something they shared in a big way.

Andy learned to love gymnastics as a teenager and later preferred the thrill of pursuits such as rock climbing and whitewater paddling. Lucy remembers the time, when she was a kid, that Andy embarrassed her at the pool by walking around the deck on his hands, as if in a gym. That was Andy.

Still, Lucy looked up to her big brother, the firstborn, to the point that he was nearly infallible in her mind. “He was always my example of doing everything right,” Lucy says, adding, “I had absolute trust in him. Andy took me climbing. He got me to rappel. I didn’t even think about it twice. Most people wouldn’t even go over the edge. Andy said ‘go’ and I went.”

Lucy followed Andy to Pomona after he told her she’d like it better than the other schools she’d applied to. Somehow, Andy was always right.

At Pomona, Lucy still went to the pool to keep fit, but she gave up swimming competitively to concentrate on her studies. Burdette Poland, a Pomona professor of history emeritus who taught Lucy in three courses, recalls Lucy as competitive, honest and determined. He remembers how she “broke loose” in her comprehensive exams in history, doing better work than she had ever done before and ranking third among history majors that year.

Andy, for his part, did compete on the swim and water polo teams, but was better-known for his mountaineering exploits, including eight days spent on Yosemite’s El Capitan. Richard Preston ’76, today a bestselling writer (The Hot Zone, The Cobra Event), recalls a conversation in which he reminded Andy that a single mistake during his solo ice-climbing expeditions could lead to his death. “Andy looked at me with this little smile and said, ‘Of course, I know that.’ I said, ‘Why do you do it?’ Andy said, ‘Because I don’t make mistakes.’”

Lucy and Preston dated steadily for two years when Lucy was a sophomore and junior. The pair would lose themselves in conversation about archeology and art history. Looking back, Preston recalls Lucy being in her prime during her Pomona years, except for having to live in the shadow of the monumental reputation of her brother, who had routinely scaled the side of Smiley Hall to get to his room instead of taking the stairs.

Andy and Lucy both were accepted at Harvard in their post-Pomona years, and Andy did go on to Harvard Medical Schoolafter his time at Oxford on the Rhodes Scholarship. But Lucy, after earning a master’s degree in art history at the University of Oregon and going on a Rotary Foundation scholarship to Munich, chose to attend the University of Pittsburgh for her doctorate because of the financial aid package.

The siblings maintained a close relationship despite the thousands of miles between them. Andy, a physician, made his home in Valdez, Alaska, and Lucy settled in southern Germany, raising three sons with her husband Roland, who works in banking. Lucy met Andy regularly for ski trips in the Alps, followed his expeditions with interest and consulted him for medical advice regarding her children.

All along, Lucy would find time for brief swims, but only when her children joined a team did Lucy return to competitive swimming. Within no time, Lucy began racking up the medals at swim competitions across Germany, pleased that she had found a way to combine her love for swimming with her responsibilities to her family. In 2002, Lucy won three gold medals at the Life Saving World Championships in Florida and was named athlete of the year in Schweinfurt, where she practices swimming and teaches everyone from toddlers to triathletes.

Then came the news that Andy had rowed his skiff out onto Prince William Sound and killed himself.

Why Andy made this choice remains a mystery to Lucy. She confesses, “It’s a tragedy which, in its profoundness, is incomparable to anything else in terms of being an incalculable shock to me and to our whole family.” Lucy believes the shock compromised her immune system.

AFTER THE CANCER DIAGNOSIS, Lucy at first focused on the pain, the suffering and the fear she felt in the face of cancer and the treatments. But she intuitively understood that she had to turn negative feelings into positive emotions in order to survive, so Lucy began swimming in even more competitions, just when most people would have believed that impossible. The initial diagnosis of cancer and the ensuing treatments only kept Lucy away from swim meets briefly. To her doctors’ amazement, she won four gold medals at the Bavarian long-distance championship in March 2004, less than four months after her first operation.

Lucy began to develop a personal philosophy about living with the disease. She had seen how other cancer patients had given up quality of life during treatment, and she resolved to follow a different path. And, as the years went by, Lucy says Andy’s death increased her determination to survive. “He gave me even more reason never to give up,” she says. Lucy’s medical advisers say her attitude has been a key part of  her survival. “Frau Kunz keeps fighting … Such illnesses do not have to be accompanied with weakness and low performance, if patients are willing to actively do something about it and fight their way through,” says biochemist Ulrike Kämmerer, who Lucy consults on her diet.

Kämmerer and a colleague at the University of Würzburg, medical physicist Rainer Klement, were co-authors on a recent paper about the benefits of a high-fat, low-carb diet for those diagnosed with cancer, the diet Lucy keeps and one she calls the “Atkins diet” for cancer patients. In the paper, titled “Is There a Role for Carbohydrate Restriction in the Treatment and Prevention of Cancer?” published in October in the journal Nutrition and Metabolism, the two explore the effect of glucose on tumor cell proliferation.

The diet is not widely recommended by doctors because many don’t know about it, and there have been too few tests of the diet, Klement says. But the researchers say the sugars in a high-carb diet actually feed tumor cells. By lowering the amount of sugar in the blood, a cancer patient can “starve” a tumor of the nutrition it seeks. “Several factors play a role in Lucy’s survival,” Klement says. “One is the swimming, which gives her lots of strength because she loves it, and she swims with abandon. The swimming helps to detoxify her body. Doing sports in some sense is like reducing carbohydrates—both work together well, and both are helping Lucy. And then she’s strong psychologically and has an extremely strong will. That surely also plays a part.”

Lucy herself says having strong and supple muscles has helped her recover quickly from numerous surgeries to remove tumor growth from different parts of her body. Her rigorous swim training has reduced her pain substantially and become her best physical therapy. “After all that radiation, if I hadn’t really pushed myself, I wouldn’t be able to move today much at all,” Lucy says.

Still, from a medical point of view, Lucy’s swimming ability defies explanation, given her metastatic condition and the large number of chemotherapy treatments she has undergone. Kämmerer says, “Lucy is swimming times that hardly any healthy (and younger) person could. It’s extremely exceptional.”

IT’S TUESDAY, THE DAY when Lucy devotes herself to her students at the pool. She is conducting a class with nine small children. As she helps the little ones with their backstroke, Lucy’s strongest stroke, she holds their small heads in her palm like a healer.

On this particular afternoon, Lucy skips the nap she usually takes poolside. Typically, she lies down on the tiled stadium bench for a doze. Lucy has organized her chemotherapy treatments and her schedule around her coaching commitments and her own swimming routine. She even manages her available energy throughout the week so that she can be at her best on Tuesdays.

Dealing with her lack of energy is just one side effect that Lucy has had to learn to live with. She says it took her years to come to terms with the limitations that the disease brings with it. Lucy has hit multiple physical low points but, she says, the thought of giving up doesn’t enter her mind. In 2010, while on holiday in Michigan, she says she experienced pain at a level of 13 on a scale of one to 10 after two months of thoracic radiation. “I basically lay on the floor of the summer house all vacation,” Lucy recalls.

Lucy says her unusually well-tested pain threshold allows her to keep going. “I am able to transfer the tolerance of pain and suffering I have had to develop to survive the treatments for my cancer to my competitions in the pool. … I can let swimming hurt. I can go beyond my limit.”

Professor Poland compares her fight with cancer to the story of Persephone from Greek mythology, since Lucy is forced to live another life in a different realm when she’s undergoing cancer treatments. “Lucy has the good fortune to be able to come back but always with the limitation that she has to return to the underworld before the end of the year,” says Poland, who has been corresponding with Lucy in recent years.

He adds, “When I was a kid, I would get a fever and go to bed, waiting for deliverance. I would lie back and let nature take its course. Lucy is the extreme opposite of that. … She is indefatigable.”

Lucy’s story of courage also helped Richard Preston as he recovered from a shattered pelvis after a ski accident in 2010. A few years earlier, the author had taken up tree-climbing while researching his 2007 book, The Wild Trees, about the people who climb some of the world’s tallest. After the ski mishap, he feared he “would never climb a tree again,” Preston says. “I thought a lot about Lucy during that time. If Lucy Embick Kunz can break the world record in swimming with ovarian cancer, then climbing trees with a shattered pelvis ought to be doable.” Preston has now increased the vertical distance he can climb to that of a redwood tree. He did it in honor of Lucy.

“I see her as a breathtaking athlete—but her accomplishments are not just physical,” says Preston. “They’re spiritual at the same time. People who have seen this deeply admire it.”

EIGHT YEARS INTO THE FIGHT, Lucy hardly seems battle-weary.Just recently, she received news that her tumors had not shown medically relevant growth, which meant she could extend the pause in her chemotherapy for another three to four months. “I feel like I have been saved from a burning airplane,” she says.

Amid her cancer treatments and swimming meets, Lucy still grieves the loss of Andy: “There is never a day when I do not miss him.” Resolving the tragedy isn’t possible, but she is no longer trying to find answers about why Andy did what he did. “Andy was always absolute in his decisions. I have accepted it,” Lucy says.

It’s not just the swimming that helps her cope, but the people she meets in occasional competitions for people with disabilities. At these meets, Lucy swims with people who are blind, deaf, paralyzed or have limbs missing. (She is categorized as “generally” handicapped.)

Lucy’s eyes well up as she describes a swimmer who has no arms and legs: The swimmer bites on a cord with his teeth to hold him at the edge of the pool (any body part counts). When the starting gun fires, the swimmer releases the cord and begins to propel himself through the water with sinuous short dolphin motions. “You watch people who swim 50 meters without arms and legs, and everything becomes quite relative,” Lucy says, adding, “I don’t think it’s fair for me to complain about my health.”

Nor does she complain. Andreas Moser, who coaches triathletes with Lucy at the Silvana pool in Schweinfurt, notes that Lucy doesn’t talk much of her cancer. She will just occasionally mention in a neutral way that she’s going to lose her hair again, something that makes her bathing cap the perfect accessory.

“I don’t look for excuses,” says Lucy. “I just swim.”

The motto of the Tahoe Rim Trail Endurance Run is “A Glimpse of Heaven, A Taste of Hell,” and it’s not hard to recognize why. Taking place smack-dab in the middle of the sweltering summer, the race encompasses two states, three national forests, six counties and a 10,000-foot summit in Nevada.

On this particular day in July 2009, Zach Landman ’08 was one of more than 100 runners jogging the route. Until the spring of his senior year, Landman—then a beefy linebacker on the Pomona-Pitzer football team—had never run more than five miles in a row. Barely more than a year later, he was competing in this 100-mile “ultramarathon.”

Just past the halfway point, he was settling into a nice pace. But as any ultra runner can tell you, there’s always time for things to head south, and at mile 60, they did. Landman’s stomach shut down, his muscles started cramping and he began throwing up every few steps in the dry afternoon heat. He was underfed and dehydrated, but couldn’t keep down food or water. For several hours he groggily stumbled along the dusty trail, dragging his feet and feeling on the verge of collapse.

“I was ready to quit,” he says simply.

As the sun set across the horizon of the Sierra Nevadas, Landman was losing hope and growing delirious with exhaustion. But with a bright array of constellations scattered across the sky and the piercing silence of the desert surrounding him, his mood slowly shifted and adrenaline started coursing through his veins again. After reaching the very edge of his ability to go on, he had somehow emerged in a strange, transcendent, almost blissful state of being.

He sped up for the final 20 miles of the race, and blew through the last seven to 10 miles of the course at a blistering seven-minute-mile pace. “Getting past that threshold of pain you thought you could withstand, you get to a new level of lightness and feel as though you could run forever,” he says. “You break through and it becomes almost utopia.”

Pause.

“Almost.”

CERTAIN ATHLETIC GOALS are understandable, practical and even downright enjoyable, like honing a tennis serve or perfecting your downward dog. But what, exactly, possesses someone to want to run 100 miles without stopping? “I read about it flipping through a Runner’s World magazine, and thought it sounded like just about the hardest thing I could possibly do,” Landman recalls with a hearty laugh.

The Orinda, Calif., native has a history of taking on tough challenges. In high school, he made a documentary about gay marriage that surprised his football teammates and won national film awards. At Pomona, he majored in science, technology and society, and was known as a fierce competitor on the gridiron. “Zach’s only happy when he’s being challenged,” says Robert Pepple ’08, a close friend and former teammate. “If something’s too easy for him over the long run, he gets bored. He loves the process itself—reaching a goal and then progressing to the next one.”

That same fire in the belly has further revealed itself at the University of California at San Francisco, where Landman is a fourth-year student of orthopedic surgery who, when he finds the time, publishes papers in major orthopedic journals. (He also fit in getting married this past summer.) All the same Type A personality traits of ultra runners figure prominently in medicine, among them intensity, focus, stamina and a drive to better understand the limits of the human body. “We are an ambitious, self-motivated bunch,” says ultra regular Mark Tanaka, an E.R. doctor and friend of Landman’s. “This isn’t a pastime for the lazy.”

LANDMAN’S ULTRA CAREER almost didn’t make it beyond the first race. Even with that joyous last-minute sprint, when he crossed the finish line at Tahoe—with a time of just under 24 hours—he vowed never to run another ultra again. In the ensuing days, though, he couldn’t get the experience out of his head.

“Whenever I closed my eyes, I was on the trails,” he says. Within two weeks, he was online researching his next competition. Landman won four of his first six races, even setting a course record at the Big Basin 50K (4 hours, 39 minutes). In 2010, he tackled the sport’s Holy Grail at the Western States Endurance Run, which climbs more than 18,000 feet, descends nearly 23,000, and traverses snowcaps, riverbeds and a seemingly unending series of sun-baked canyons with such names as “The Bake Oven” and “Devil’s Thumb.” Typically, as much as a quarter of the more than 400 participants don’t finish. The then-23-year-old, in only his second 100-miler, placed 16th.

Mark Gilligan, a long-time runner who founded the website UltraSignUp, had already heard about Landman after two races. “When you’re in a sport where everyone’s pretty gangly and the average age is 45, a young, muscular guy like Zach sticks out,” Gilligan says. “I could tell he was talented and that it was only a matter of time before he started winning races.”

That’s not to say success has come easily. In the early days, Landman spent hours painstakingly poring over topographical route maps and picking the brains of his peers. He quickly learned that the advice about how “it’s not a sprint, it’s a marathon” becomes exponentially more valuable in ultras, which runners train themselves to separate into 10- or 20-mile minigoals to conquer.

“Rough patches in marathons may last a few minutes,” he says. “In ultras they feel like an eternity.”

In preparation for those eternal runs, Landman’s weekdays begin with 3:30 a.m. “easy runs” of 10 to 12 miles through San Francisco’s Golden Gate Park. On weekends, he embarks on 50- mile excursions in which he equips himself with nothing more than a water bottle and a salt tab. When he and his wife Geri take hiking trips into the mountains, she will often drop him off at a trailhead and meet up with him 50 miles later in time for dinner.

During races he subsists on one-ounce energy gels that he knocks back like shots. At Western States, while others rested at aid stations and chowed on PB&Js and Red Bulls, he guzzled a couple gallons of water, sucked down 52 gels and stopped for nothing. (Nope, not even nature’s call. “I guess it’s one of those skills you pick up along the way,” he says nonchalantly.)

To motivate himself the night before each competition, Landman writes out a list of reasons that he’s running and hands it out to his crew to read back to him during the race. “I know I’ll want to come up with reasons to quit,” he says, “but I’ve grown to anticipate those moments and almost look forward to them.”

So what’s the payoff? Ultramarathoners aren’t looking for money or fame or glory; the prize for finishing Western States in under 24 hours was a silver belt buckle. For an overscheduled guy like Landman, the ritual centers him and lets him shut down his mind—which, somewhat paradoxically, often results in fresh perspectives and new research ideas.

“Every time I do an ultra, rather than feeling bigger and stronger and better about myself, above all I feel humbled,” he says. “Running up mountains and through nature, you can’t help but be in awe of what’s going on around you.”

LANDMAN’S HOBBY, while closely related to his career in orthopedic surgery, might also seem somewhat at odds with it. His UCSF colleagues tease him about how he’s “just trying to build a network of patients,” and caution him, only half-jokingly, about subjecting his feet to an activity that could result in the debilitating injuries described in his textbooks.

“There’s probably a healthy balance to this, but doing things in moderation just doesn’t work for me,” admits Landman, who cut a quarter of the weight off of his 225-lb. football frame in his first year of training. After Western States, he exhibited symptoms of rhabdomyolysis, a muscle-breakdown condition that can cause severe kidney damage. While he understands the risk of developing early osteoarthritis or hypoglycemia, he says that the joy he gets from the sport, for the moment, outweighs the potential repercussions 30 years down the road.

His research at UCSF could provide insight into what damage will be done: This spring, the Clinical Journal of Sport Medicine is publishing an article he co-authored that looks at physiological changes runners experience during races. Bucking conventional wisdom, he found that runners who hydrated less—and, therefore, lost more weight—were actually more likely to succeed. He argues that the “drink plenty of water” mantra that’s been drilled into our heads vastly oversimplifies matters for ultra runners, and that factors such as electrolyte balance and blood pressure may be better benchmarks for good health than weight loss. In many cases, runners are disqualified from races if their weight drops by more than 5 percent. Landman hopes his article might inspire the entire community to rethink the rule that has been followed for more than three decades.

AS MUCH AS IT IS a physical achievement, ultra running is ultimately bigger than the body. Some of the most experienced marathoners view a 50- or 100-mile race as beyond the realm of possibility, but ultra veterans would argue that it’s all in their heads. “If you can get past the mental roadblocks, you can get past the physical ones,” Gilligan says. Or, as one of Landman’s mentors told him: “The first 50 miles are run with the legs, and the second 50 miles with the mind.”

Landman wasn’t surprised to discover through his research that ultramarathons attract a disproportionate number of recovering addicts. The sport is, if nothing else, rooted in extremes— that mix of heaven and hell, of unbearable hurt interspersed with intense physical euphoria.

Speaking of hell, still remaining on his bucket list is the 135-mile Badwater Ultramarathon in Death Valley, where temperatures get so high that runners keep their feet on the road’s white lane markers to prevent the soles of their sneakers from melting off.

“Sure, some people don’t understand all of this and think I’m crazy,” Landman says. “But it works for me.”