Originally Posted by
terrymorse
If those riders aren't pros, they should be.
We have a long local climb that's about 36 miles up-and-down. The fastest pace up combined with the fastest pace down averages to 21.7 mph. Both pros.
The nature of the hills greatly affects average speed. IIRC Iowa has constant rolling hills which can be ridden at a faster average speed than one massive climb up and then a descent