Thanks. Have got a standard compact 50/34, 12/28 and managed Curbar in the saddle. Looks like Winnats might force me to do some pretend running. Will be saving that till absolutely necessary as out-of-the-saddle efforts leave me empty.
As ColinJ said, will be going from Edale station to Barbers Booth and up Mam Tor from there. Went down it a month ago and it was open then?
Curbar as an average gradient stacks up close to Winnats, but it's much more of a constant 10-12% gradient. Winnats has that sapping 6-7% lead up that looks almost flat, then it hits 20% for several hundred metres. Last time I did Winnats I took it too easy and ended up sprinting around the last left hand bend and up to the second cattle grid. I was pretty fresh and only weigh 68kg so I'm not a bad climber anyway.
The route of the Peak District Epic starting and finishing in Bakewell is an absolute cracker, there are 7 categorised climbs for a total of 7,300ft in 63 miles including Longstone Edge, Pyms chair (the steep way), Goyt Valley, Axe Edge and others. It's almost all on very quiet roads and is well worth a try.
Riber Road has a section that is steeper than anything Winnats has to offer, it's over 20% and is called 'Riber road zig zags' on strava for a reason! It's the only part of any climb that I can remember not riding up in a straight line.