Trail Running calendar near Brentwood 2026-2027

Experience a festival of trail running through the South Downs National Park with distances from 10km to 100km. Enjoy sandy paths and ancient woodlands with included coach transport and on-site camping.

Choose your own challenge at the Summer Sun Run, a flexible lap event set in the scenic Denbies Wine Estate. Complete as many 5.3 km laps as you like within 7 hours, with a large medal for all finishers. Enjoy a flexible start window and a..

Experience a flat multi terrain run through the picturesque Cambridgeshire countryside with 10k and 4 mile chip timed races or a social 4 mile walk for all ages.

A scenic half marathon on the historic Ridgeway National Trail in Buckinghamshire. The hilly, fully-marked trail route connects Wendover and Princes Risborough, passing through the Whiteleaf Hill Nature Reserve.

Join this community fundraising event featuring chip timed races on traffic free roads through East Hertfordshire. Choose between road races or a children's run while supporting new local sports facilities.

Experience a scenic multi terrain race around Bewl Water with a choice of 15 or 5 mile routes featuring lakeside views and a festive finish with live music and treats.

A women only trail event at Denbies Wine Estate in Surrey on 5 July 2026 offering 50K, 25K, 10K and a kids race. No cut offs and options for in person or virtual participation, with profits supporting the SheRACES mission.

Enjoy a guided 10km group trail run through the beautiful Thursley National Nature Reserve. This flat course features a famous boardwalk and is led by an experienced guide at a steady social pace.

Experience a multi terrain 5k run through the ancient woodland of Fermyn Woods Country Park near Corby. This chipped event welcomes runners of all abilities aged 11 and over with bespoke medals for all finishers.

A 6-hour timed run along the flat Jubilee River in Slough on July 9, 2026. Participants complete laps of 5.24 miles, choosing their own distance. Every finisher gets a medal.

Enjoy a flexible midweek 7 hour time challenge along the scenic River Thames. Run any distance from 3km to an ultra marathon on a flat signed course with a great aid station and finishers medal.

Phoenix Fridays offers a flexible Friday run with a "rock up and go" start. Choose your distance on a flat, timed 5.3km loop along the Thames towpath. All finishers can pick from a selection of signature medals.

Test your endurance in this 24 hour multi terrain event through the London area as a solo runner or in teams. Enjoy free camping and full site facilities while completing as many 5.75 mile laps as possible.

Race to the Stones is a historic ultramarathon on Britain's oldest trail, the Ridgeway. Choose from 50 km or 100 km distances, finishing at the ancient Avebury Standing Stones. The event offers extensive support with well-stocked pit stops,..

Explore the ancient woodlands and chalky ridges of the Chiltern Hills with five trail distances ranging from 8km to a 50km ultra. Enjoy a plastic free racing experience starting from the historic market town of Princes Risborough.

Explore the scenic Mid Suffolk countryside on this undulating event following the River Rat. Choose from distances of 13.5, 23, or 31.5 miles featuring historic churches and full checkpoint support.

Enjoy a flexible timed running event along the flat River Thames towpath. Choose your distance from 5km to an ultra marathon and earn a bespoke spinning medal on this fast riverside course.

Join a social guided trail run through the scenic Chiltern Hills led by expert instructors. This non competitive 10k event features technique coaching and group runs for all abilities starting from Aldbury.

MacTuffX Peterborough offers a unique interval based competition for adults. Choose between solo, doubles, or relay formats featuring 400m and 800m repetitions for a focused fitness test.

Join this multi-distance trail event at Bawsey Country Park featuring distances from 5k to Ultra Marathon. Enjoy a lap-based course with straightforward logistics and a finishers medal for all participants.