SPORTS
05/10/2010 05:12 am ET Updated May 25, 2011

Iditarod Drug Testing Coming Soon For Popular Competition

ANCHORAGE, Alaska -- Every human competitor now running the Iditarod Trail Sled Dog Race will be tested for alcohol and illegal drugs on the trail for the first time in the history of the 1,100-mile race -- a change defending champion Lance Mackey believes is directed at him.

Read more on cbssports.com