Originally Posted by
Mvcrash
Yesterday's last climb in the TDF was 11% at times with 17 switch-back curves. I believe they were moving at between 10-15 mph when climbing and achieved 42-45 mph on the downhill which was very dangerous.
They go far, far faster than that on the descents. Sean Kelly was clocked at 124kph descending from the Col du Joux Plane in the 1984 tour. That's 77 mph. When asked about it he said "I took a few risks".
That's exceptional, but speeds of >100kph are routinely achieved.