Originally Posted by
livedarklions
600 feet over 10 miles is basically flat. Are there big uphills and downhills cancelling each other? Pavement is easier because of resistance unless the pavement sucks. You know much more about your routes and your legs than we do collectively. Just try them both and see. What's the question we're supposed to be able to help you with?
BTW, collective wisdom is often a bad thing, ever hear of "groupthink"?
60'/mile is not necessarily 'basically flat.
It could be 60 1' elevation change smooth rolls in the road which will be pretty much flat.
It could be a 40' climb at 9% and a 20' climb at 13% which would be the opposite of flat.
It's just funny you would so dismissively declare 60'/mi to be flat.