There is nothing even approaching 15% for any sustained distance on this ride. Think 30mi of 2% average more than hard hitting hills. I really think this should be fine for somebody new to this sort of distance, Hinata will make sure that nobody gets left behind or dropped off the back anyway when he does his sweep backs. Always good to have a regroup and breather at the top of any hills too.
Sounds cool, I've done some fairly regular 40 to 60 mile rides, and the dynamo last year so the distance should be fine, just don't want to hold you guys back on pace!
I've managed London to Brighton on my SS apart from Ditchiling Beacon, which gets up to 15% I think, not particularly comfortably, but if you don't try you don't get better eh?
Sounds cool, I've done some fairly regular 40 to 60 mile rides, and the dynamo last year so the distance should be fine, just don't want to hold you guys back on pace!