Mam Tor

Get behind the wheels for Mam Tor

Mam Tor -the Shivering Mountain- is a mountain pass at an elevation of 461m (1,512ft) above the sea level, located near Castleton in the High Peak of Derbyshire, England.

The road to the summit is totally paved, with narrow and steep parts. It’s called Mam Tor Road (part of the A625 road). The narrowness of the road and its 20% (1 in 5) gradient has caused it to be closed to buses, coaches and vehicles over 7.5 tonnes in weight. The road winds through a cleft, surrounded by towering limestone pinnacles. Frequent landslips on its eastern face have resulted in a multitude of 'mini-hills' beneath it. These landslips, which are caused by unstable lower layers of shale, also give the hill its alternative name of Shivering Mountain.

The first road over the pass was built in 1819, to bypass the steep Winnats pass. The former road crossed the main body of the landslide twice. Due to the local geology the road began to subside almost as soon as it was built. Because of numerous landslides, the road saw constant repairs and reconstruction the following 160 years. In 1977, the road was restricted to single-lane traffic.  The costs of repair eventually led to the road being abandoned in 1979 and the old Mam Tor Road permanently closed to traffic. 
The road features regularly in the Tour of the Peak cycle race each autumn. It presents the riders with a severe challenge, and often determines the race outcome. The pass is 17.54km (10.9 miles) long, running west-east from Chapel-en-le-Frith to Hope. The road is very steep, hitting a 10% of maximum gradient through some of the ramps. Starting at Chapel en le Frith, the ascent is 8 km long. Over this distance, the elevation gain is 317 meters. The average gradient is 4%.



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