As Simon Warren says in his 100 Greatest Cycling Climbs book, there are so many 33% hill signs in North Yorkshire, they must have got a bulk deal. The climb starting at the steam railway in the Grosmont up onto Sleights Moor (Official UK climb #147, length 3km, height gain 177m) isn’t the 33% that is signposted, but it is steep at the beginning and a long hard slog all the way to the finish high up on the Moors. The ride starts and finishes overlooking the harbour in Whitby.