Trail Running calendar near Brentwood 2026-2027

Test your endurance at Delapre Abbey with this Backyard Ultra format. Run 6.7 km loops every hour as a solo competitor, in a pair, or as part of a fixed eight loop challenge until only one runner remains.

The inaugural Essex County Fell Championships features a new 10km course with 450m of climb. This open-entry fell race offers county prizes for qualified Essex runners. Every finisher receives a free drink.

Enjoy a flat riverside run along the Thames with a flexible timed format. Choose your own distance from 5km to an ultra marathon on a scenic 5.3km out and back loop.

Test your endurance at Congo Stream with a four hour multi lap challenge. Run solo or in a team through wooded trails and historic trenches on a scenic three kilometer loop with a dedicated lap for kids.

Experience an undulating trail race through the scenic South Downs and Seaford seafront. This community event supports local charities and offers a bespoke medal and free race photos for all finishers.

Experience an off road trail run in the scenic Findon Village with a unique horse racing theme. Choose from several distances including a 10km trail, a 5 mile run, and a kids event to support local causes.

Timed lap event at Buchan Country Park on 19 April 2026 with 5.3 km laps to create distances from 5 km up to ultra within a 7 hour limit. Runners may choose one of twelve medals or a lower cost no medal entry.

Experience a timed run through the Chiltern countryside and the exclusive Wormsley Estate. This event offers mixed terrain courses over multiple distances starting from Ibstone Common to support a local primary school.

Test your endurance on a flat but demanding loop along the Thames and historic canals. Choose from 100, 150, or 250 mile distances with full GPS tracking and checkpoint support.

A limited capacity evening trail run of 5 miles for over 18s with the course run in reverse from previous years. Route files are provided beforehand and finishers can exchange their race number at the bar for a drink.

Experience a unique 5k obstacle course in St Albans featuring large scale inflatable hurdles. This event offers a bouncy and active day out in Hertfordshire for participants of various interests.

A 15 mile trail run from the beer garden of the Ye Olde Smugglers Inne in Alfriston with two pub checkpoints offering a drink and snack; route GPX and a race narrative are provided and results appear within 24 hours.

Join this road running event in Bury St Edmunds featuring distances from 5k to an ultra marathon. Enjoy scenic undulating routes and a seven hour cut off on the same day as the London Marathon.

Experience the beauty of West Sussex at the 22nd Angmering Bluebell Trail Run. Choose from 10km or 10 mile routes, including dog friendly CaniRun options, through stunning private woodland and the South Downs.

Run for a cause through the forest trails of Alice Holt Forest. This charity event supports bowel cancer research with distances from a Junior Run to a Half Marathon. Participants receive a bespoke medal and enjoy a supportive, community at..

Join NOT the London Marathon Run 2026 on Sunday 26 April in Walton on Thames for a flat, certified lap course along the riverside towpath. Choose marathon, half or a 7 hour timed challenge, enjoy flexible starts and a commemorative medal.

Experience a guided 10km trail run through the bluebell woods of the Chiltern Hills. Join expert local guides for a morning of supported running through nature reserves starting from the heart of Tring.

Experience the South Downs National Park on a 28 or 18 mile journey over the Seven Sisters and Cuckmere Haven. Open to walkers and runners, this event features significant elevation and a hot meal at the finish.

Experience a 5K multi terrain run through the picturesque Fineshade Wood. This new series venue offers a woodland course for all abilities with bespoke finishers medals and on site facilities for runners and spectators.

Enjoy a picturesque 8km loop through the trails and landmarks of Icklesham. This small scale event offers a fully marshalled course with post race tea and cake at the village hall.