they aren't slow by any standard. in 2005 Tour De France was completed in 86 hours and 15 minutes at the average speed of ~42km/h that's very fast for bikes (

they aren't slow by any standard. in 2005 Tour De France was completed in 86 hours and 15 minutes at the average speed of ~42km/h that's very fast for bikes (and probably more dangerous than driving f1 cars, that's what makes it fascinating for cycling fans).