Are you including the time for stops? Some cyclists don't need much time to use the toilet facilities and to eat and drink, and others need a lot of time. It is reasonable to assume 3 hours of total stop time over a 125 mile distance for a fairly new cyclist. It means she has 10.5 hours to complete 125 miles.
Dang, you get long and shallow? I do a 4-mile climb to my house and the lowest grade is 5% and the steepest is 18%. Nasty. I've never been on a ride that has a climb that is long and shallow, or if it was, I just thought of it as being a 3% grade, not a climb.
I thought Catrin had said she wanted to do a brevet in another state and it would be hilly. I live in a state that is mountains and valleys, so when I think hilly I think of long steep grades, not short steep rollers. You are correct, it is a different training technique if the hills are 1/2 mile or less.




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