This informal outing is a circuit of the 40 tops of 400 metres or more that are named and identified by a separate contour ring on Harvey’s Howgill Fells map.  There are in fact 39 named tops but the distinctive spot height of 500 metres to the north-west of Docker Knott was added to make a round number!  

It was first completed by Tony Wimbush and Colin Brooke in April 1985 in 11-58 starting from the Cross Keys on the A683, north-east of Sedbergh. It covers over 60 km with some 3500 metres of ascent.