Armstrong racing off-road at Mellow Johnny's six-hour

Lance Armstrong headed off road for a mountain bike race on Saturday near his home in Texas. The RadioShack rider was competing in the Mellow Johnny's six-hour mountain bike race, sponsored by his Austin-based bike shop, however, he ended up abandoning the race with knee trouble.

Sue George is an editor at Cyclingnews.  She coordinates all of the site's mountain bike race coverage and assists with the road, 'cross and track coverage.