Master's Edge is an 18-metre (59 ft) gritstone rock climbing route in the Corners Area of Millstone Edge quarry in the Peak District, England. When English rock climber Ron Fawcett completed the first free ascent of the route on 29 December 1983, it was graded E7 6c, making it one of the hardest traditional climbing routes in the world, however, it still remains one of the hardest traditional gritstone climbs.