Originally Posted by Dr. Bill
In short, you can run (and you will need) a considerably higher gear at the track than you might run on the street. Hope this helps.
Dr. Bill
I would say the opposite. I might sprint in a 48x14 on a 333 track, which is a 92.6. That would never cut it for road sprinting; easily 20 inches too low. On the track you would be spinning 100-150 rpm; on the road 80-120 so clearly your gearing would be less. Keirin would be some of the highest gearing but then you're paced up to 30mph.