SilentSoulDragon said:
49.700 so approx 50 MPH for an hour. You have to admire the effort they put into it what is cancellara's average for a TT of 50 miles.
It's kilometres, remember, not miles.
In the final time trial of the 2008 Tour, Cancellara won (well, came second to Stefan Schumacher... so won) in a time of 1:04'11" over 53km. That's an average speed of 49.546km/h.
In the final time trial of this year's Tour, Cancellara was second to Contador in a time of 48'34" over 40.5km. His average speed was therefore 50.034km/h.
Cancellara won the Valencia time trial in this year's Vuelta over only 30km in a time of 36'41". That gives an average speed of 49.069km/h.
EDIT: And - most impressively of all - at the World Championships time trial this year, Cancellara won in 57'56" over 49.8km. That's an average speed of 51.577km/h.