Former Marine Steve Walker has lost all but 5 percent of his vision, but he's competing in triathlons, striving for the Paralympics and living a full life with his wife and daughter, writes Doug Williams.
Champion off-road triathlete Lesley Paterson is branching out to mountain biking, while also juggling her career as a screenwriter, actress and coach, writes Doug Williams.
Former off-road triathlon world champion Shonny Vanlandingham is showing no signs of slowing down, writes Doug Williams.
Toughness, drive and smarts propel paratriathlete Matt Perkins as he chases his sixth world championship, writes Doug Williams.
Looking to raise money and awareness for the disease that claimed her father, 14-year-old Winter Vinecki aims to become the youngest to finish marathons on all seven continents.