Just got back from the Lakes where I've been reccying the FW route - it's a belter! I know the fells well but haven't done that much cycling there yet. Anyway, all the running up hills must have helped somehow - I've done precious little mileage on the bike for a good few months but I managed Hardknott OK, didn't have to get out of the saddle or use bottom gear until the very last bit (which is just bl**dy ridiculous!)
I did feel a bit weird being in the Lakes and not running though