Royaume-Uni·2026

High Wycombe urban area

High Wycombe runners face relentless chalk hills — the town sits at 150m but climbs sharply into the Chilterns in all directions, making flat running scarce. The Dorney Lake Duathlon runs just south near Windsor, combining running and cycling on Thames-side terrain. Cyclists thrive here: the Chiltern Samaritans Cycle and Ride Chartridge events use the steep, wooded switchbacks of the Chilterns (reaching 260m+), with sustained 8–10% grades on the ascents north and west toward the Oxfordshire escarpment.