Russian biathlete Irina Starykh has been banned for two years for doping, the International Biathlon Union says.
After running helped her combat a debilitating depression, even the most miserable of race conditions don't faze ultramarathoner Nikki Kimball.
When Tracy Barnes decided to give up her Olympic team spot to twin sister Lanny, the story went viral. The reaction has been surprising to the biathletes, but Tracy insists it was an easy decision to make.
With her sights on Sochi, Julia Clukey shares the keys to her success, which include strength training, working on her sled and visualizing her runs.
Sochi-bound Susan Dunklee shares her keys to biathlon, which demands speed and endurance for cross-country skiing, plus calm and accuracy for shooting.