This past TDF winning rider posted the fastest average speed ever. But comparing the event speed from year to year can be misleading because the route changes and there may be a lot more climbing some years, more TTing, weather, etc. Plus, it's not a 2000 mile time trial. The riders are not racing the whole time and there may be significant amount of "tempo" riding.
That said, Jonas Vingegaard said they were going pretty hard last year.
Using TDF average speeds as a measure of bicycle speed capabilities is flawed.
And obviously any increase in speed with new tech is going to come in very small increments, if at all.
Last edited by big john; 04-04-23 at 07:46 AM.