U.S. Cyclist Lance Armstrong, left, cycles around Phoenix Park, Dublin, Ireland, Tuesday, Aug. 25, 2009. Over 1,000 riders turned out to cycle with Armstrong after he posted his cycle ride on twitter. AP Photo logo AP Photo 3 months ago

U.S. Cyclist Lance Armstrong, left, cycles around Phoenix Park, Dublin, Ireland, Tuesday, Aug. 25, 2009. Over 1,000 riders turned out to cycle with Armstrong after he posted his cycle ride on twitter.