avanti said:Greg Lemond.
His TT in the 1989 TdF give him overall victory. If my recollection is correct he posted the fasted average speed TT in the TdF at the time and since then has only been bettered twice.
Avoriaz said:Two that haven't been mentioned:
1) when Sean Yates won the TT at Wasquehal in the 80s, it was the fastest TT ever in the Tour
You really need a sample of average speed in several ITTs in order for it to be truly representative and worthy of bringing up in this thread.
The fastest average speed long TT in a Grand Tour is from the 2005 Vuelta a España, when Rubén Plaza covered 38,9km at an average of a stunning 56,22km/h. Now, Plaza is a good time triallist, but that's still outstanding. Roberto Heras was 2nd however, and less than a second behind Plaza. "Hmmm", you might say, "but to be fair he was busted for doping at that race and that could explain the anomalous fast ITT, but when you realise that Carlos freaking Sastre was only 4 seconds back on that, you think "yea, obviously this is either downhill, massive tailwind, or both".
I would never advocate Rubén Plaza being mentioned in a list of best time triallists ever. He wasn't even the best ITT rider on Liberty Seguros Continental (Héctor Guerra was) or Caisse d'Epargne (Luís León Sánchez was).