Trail Running calendar near Eight Ash Green 2026-2027

ATW Grafham 5K and 10K take place at Grafham Water Visitors Centre on 25 October 2026. Entry fees range from £24 to £33, the races run alongside the ATW Grafham Duathlon, and camping is available the night before.

An off-road event south of Canterbury offering marathon and half marathon routes across scenic trails and country lanes. Checkpoints, mandatory kit requirements, OpenTracking and Event HQ facilities are provided.

Looped races at Chalfont Park and Chalfont St Peter let runners choose distances from a 7K loop to multi lap ultras. Aid station, clear course marking, crew support and medical cover are provided.

Essex Walker offers a 26 miles figure of 8 route and an 18 miles variant on footpaths and bridleways around Blackmore. It is part of the Essex and Herts Triple Challenge and includes checkpoints, refreshments, and a finishers certificate.

A Halloween themed night time run at Irchester Country Park on 30 October 2026 offering 5k and 2k family runs, finishers medals, Halloween treats, free event photos and prizes for top 3 men and women in the 5k.

A single-loop **50K** trail race from Berkhamsted through Ashridge and along The Ridgeway, featuring 800 m of ascent, fully marked navigation, three full aid stations and a 9-hour cutoff.

A Halloween themed *6.66 km* trail run in Chelmsford on 31 October 2026 with GPX/Strava route support, fancy dress prizes and a brewery finish offering a medal, drink and crisps.

Forest trail races at Wendover Woods on 1 November 2026 include marathon, half marathon, 10k and a junior run over a multi-lap 10 km course with varied, hilly terrain and on-site facilities for spectators.

Two days of marathon and half marathon races around Caldecotte Lake in Milton Keynes on 6 and 7 November 2026, with multi-lap clockwise courses, on-course water and toilets, enforced time limits, and bespoke finisher medals.

Night trail running at Stonor Park on 7 November 2026 with three marked routes of 7 km, 13 km and 17 km across Chiltern Hills estate trails. Runners should carry a head torch, bring a refillable cup and note one outpost on the middle and lo..

A winter obstacle race in Brentwood, Essex featuring muddy courses across farmland, woodland and lakes. Distances range from about 6 km to 24 km with dozens to hundreds of natural and man made obstacles and chip timing for participants.

Take on flat, scenic laps along the Thames towpath in Walton on Thames with flexible starts and distances from 5 km to ultra. Limited places, aid stations, digital results and medals make this a friendly, festival style challenge.

Experience a scenic trail run through the Bedfordshire countryside starting from Leighton Buzzard. Choose between a classic half marathon or a metric distance featuring canal towpaths, woods, and rolling hills.

Trail running at Stonor Park in the Chilterns with three route choices of 22 km, 13 km and 7 km. Expect well marked woodland trails, steep climbs, possible wildlife sightings and outposts on the longer courses.

A flat Fens Way event from Cambridge toward Ely and Kings Lynn offering a marathon, 50 mile ultra, relays and a 100 mile option, with GPS tracking, generous cutoffs and on-course support.

A muddy obstacle course at the Secret Nuclear Bunker Estate in Brentwood offering 6 km with 40+ obstacles or 12 km with 70+ obstacles, signature features like a 20 foot Deathslide and a multi lane zip line into water.

A trail event in Windsor on 8 November 2026 offering a 10K and a half marathon on flat off road trails from Alexandra Gardens. The event features chip timing, race photos, post race goodies and an event village.

A commemorative 7 hour Time Challenge at Wraysbury Skiff and Punting Club on the River Thames offering distances from 3km up to 50km on signed mixed terrain laps. Finishers receive medals and distance pins and aid stations include vegan opt..

A Remembrance Sunday trail event in Brightlingsea on 8 November 2026 with live Last Post and a two-minute silence during the race. A looped course offers 10km, half, marathon and a six hour timed option with on-course aid stations.

A seven hour timed challenge on a signed loop along the River Thames with flexible distances from 3 km to 50 km, finishers' medals, goody bags and aid stations with vegan options.