Brothers CAYDEN and CONNER LONG are the 2012 SportsKids of the Year for Sports Illustrated Kids magazine. The Tennessee brothers participate in triathlons together. Cayden, 7, is unable to walk, so Conner, 9, pulls him along. They completed their first race in June 2011. "I knew we could finish that race," Conner says. Watch a video about their accomplishments, above.