Trail Running calendar near Brentwood 2026-2027

Experience a scenic 50 km loop through the South Downs starting from historic Arundel. This trail race features rolling hills, forest paths, and riverside tracks with full navigation marking and live GPS tracking.

Explore the heart of Thetford Forest with a flexible timed challenge on a 5.3 km multi terrain loop. Complete any distance from 5 km to an ultra marathon with full support and a finishers medal.

Experience a scenic 16 mile multi terrain race through the Berkshire and Hampshire countryside. This undulating cross country course offers bus transport to the start and kit transfers for all participants.

Experience a traffic free 10k trail run through the ancient pollard trees and lakes of Epping Forest. This undulating two lap forest course features chip timing and finisher medals for all participants.

Take on the Gauntlet Treasure Run along a flat riverside towpath in Walton on Thames, doing laps of a 5.3 km out and back to build any distance from 5k to ultra within seven hours. Limited places and every finisher gets a medal.

Choose your distance on the day with these flexible loop based races in Buckinghamshire. Run anything from 7km to an Ultra Marathon on scenic trail and road routes with full support and central aid stations.

Experience a premier multisport challenge at the Culden Faw Estate featuring road and offroad duathlons plus a six hour endurance race for all bike types.

Experience an evening trail run through Wivenhoe ending with a social gathering at a local pub. This five mile off road event features a mass start and requires a head torch for all participants.

Celebrate the new season with this 10k trail run featuring a unique dusk course and a post race egg hunt. Enjoy a limited edition T shirt and hot refreshments while tackling the scenic terrain.

Enjoy a flexible 7 hour time challenge along the scenic River Thames at Runnymede. Choose your own distance from 3km to ultra marathon and earn a unique Easter egg medal and goody bag.

Join an off road 5k trail race through Westley Heights Country Park and Willow Park. This measured course features a mix of bridleways and tarmac sections for a true countryside running experience.

Participate in a self navigation trail race through the Felsted countryside as part of a four day Easter series. Choose between five and nine mile routes using written directions for a unique timing based challenge.

Experience a mini version of the backyard ultra format on a hilly trail course. Complete six yards with a special marathon distance challenge to receive a bespoke memento and local refreshments.

Take on the Unbreakable Treasure Run on 5 April 2026 at Xcel SPORTS HUB, Walton on Thames, running timed laps along a flat riverside towpath from 5 km to ultra. Limited places and a 7 hour time cap make this a focused challenge with a keeps..

Join the third day of the Easter Eggstravaganza Trail Series for a self navigated run through Little Baddow. Choose between five or eleven mile routes using written directions followed by refreshments at the cricket pavilion.

Join this Easter Monday tradition in Berkshire featuring a 10km off road course through local woodlands. Participants can choose between a standard foot race or a dog friendly canicross event starting from the Mortimer Fairground.

A traditional 5-mile trail run on Easter Monday, looping around the scenic Hall Barn Estate. The event starts and finishes at Beaconsfield Rugby Club, with parking available at the nearby motorway services. Trail shoes are recommended for t..

Join the final day of the Easter Eggstravaganza Trail Series for a self navigated 6 mile run starting from the Rose and Crown pub. Finishers receive a voucher and a chocolate treat at this unique timed interval event.

Explore Northamptonshire's countryside on a 54-mile ultra marathon loop from Brixworth Country Park. For those preferring a shorter distance, the Rosebud Marathon covers the final 26.2 miles of the route. Relay team options are also availab..

Test your endurance with the 50 Mile Grand Slam 2026. This comprehensive series includes four iconic 50 mile races across the South Downs, North Downs, Chilterns, and Wendover Woods.