Audax rides

J, have you done the Super Randonneur series already?

2500m climbing in 300km is much flatter than your average 300km. A couple of big climbs make it easier as it makes the rest of the route flatter.

I agree, but the last 40km is almost flat as a pancake, which is why I thought the 300k with 2500m should be fine (LDD have similar climb at 100k shorter).