Potomac athlete heads to New York City, from gravel track to Nike stadium

On an overcast day in early February, Potomac School's outdoor track was covered in snow. Cows and horses stood on a property nearby and the sounds of cars whooshing along Highway 200 could be heard a few miles away.

Corbin Weltzien crunched footsteps into the snow as he walked out onto the track. He started training on this track in the fifth grade and grinned as he talked about some of its more run down elements. Now a Junior at Hellgate High School in Missoula, Weltzien and five other athletes part of the Mountain West Youth Track Club - the only USA Track and Field Club in the greater Miss...