Two words: Pateley Bridge. It lies in a river ravine and when it rains a lot the River Nidd floods, a lot. Every road out involves a hill, some are long and steep (Greenhow 3990 m, gain 282m),Nought Bank Road (2700m, 207m) which are in Simon Warren's book but others with chevrons are not (Old Church Road and Peat Lane). Oh and the mainroad to Harrogate is steep as well.
So a few hilly loops round Pateley will sort out anyone's climbing credentials.
My son lives in Otley (on the R Wharfe) and to go North to Pateley involves climbing over Blubberhouses Moor ,losing all the height going down to a river valley (Washburn) and then climbing up over more moors to reach Pateley.
It's why Yorkshire has an ICU recognised Tour (of Yorkshire) and no other county has.