Walk 115: Hertfordshire Marathon Loop

26 miles (41.8km) with 530m of total ascent

Rolling fields along part of the Hertfordshire Marathon Loop

We created this walk following a request from friends who asked us to create a 26-mile circular walk through the Hertfordshire countryside which they could use to raise funds for the National Autistic Society They wanted a marathon-length circular walk along footpaths, bridleways, byways and lanes. The Hertfordshire Marathon Loop is designed for anyone who wants to walk a marathon in aid of charity. This walk can be started and finished at any point along the way, and we have routed it past both Brookmans Park Station and Welham Green Station for those wanting to reach the start point by train.