Armstrong says last few weeks 'difficult'
1 of 1
Bike riders wait at the starting gate at the Livestrong Challenge Austin bike ride Sunday, Oct. 21, 2012, in Austin, Texas.
Photos: Garden Party: Meg Lin
Photos: Paddleboarding: Molokai-2-Oahu Race, July 27
Photos: Island Images: July 2014 (Part 2)
More Photo Galleries »