Water & Windmill 10 Miler 2026

The Water & Windmill 10 Miler is a 10-mile trail run guided from Aldbury, United Kingdom, taking place in autumn. It is not a road race or a solo navigation challenge; runners follow a leader around the Chilterns. The route uses local canal paths, waterways, and reservoirs, giving the course a countryside trail feel rather than a town-centre race. Its most distinct landmark is Britain’s oldest post windmill, which runners pass during the 10-mile loop.