Tim O’Donnell’s Custom-Painted Trek Speed Concept
A look at the patriotic bike American Tim O'Donnell will ride on Saturday's Ironman World Championship.
For access to all of our training, gear, and race coverage, plus exclusive training plans, FinisherPix photos, event discounts, and GPS apps, sign up for Outside+.

















Photos by John David Becker.
Captions by Aaron Hersh.