Joined: Feb 2013
Posts: 1,472
Likes: 11
From: Near St. Louis, Missouri
Bikes: Giant Defy Advanced, Breezer Doppler Team, Schwinn Twinn Tandem, Windsor Tourist, 1954 JC Higgens
Your chance of getting a flat in a 20 mile TT is very, very small. Don't worry about it. They probably have a sag wagon for such eventualities anyway.