The clue is in the name. Peak District. The road is either up or down, rarely flat. Hard up, terrifying down. Short yet sharp climbs to test the legs followed by twisting, snaking descents to test your grip on the brake levers.
Yet the ever changing landscape is magnificent, one minute rolling moorland, the next craggy cliff faces, a twist and turn here, there, a glorious ravine, a wooded valley, a bustling twee village blurring on by.