Brentwood
Trail Running Calendar near Brentwood 2026-2027
Explore the top trail runs near Brentwood for 2026-2027! We've gathered 91 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
February 2027
A timed lap event in Crystal Palace Park on 21 February 2027 where runners complete 2.65 km laps to reach distances from 5 km to ultra, with a seven hour limit and a finishers' memento for all participants.
A 42-mile trail race from Chipping Ongar to the ancient Chapel of St Peter-on-the-Wall, following an old pilgrimage route through rural Essex. Mostly off-road and often muddy, the route is waymarked with GPX support, four outdoor checkpoints and mand..
A single lap undulating 10k trail race at Hadleigh Country Park with steep hills, deep mud, technical terrain and mandatory trail shoes.
March 2027
Riverside out and back races from Small Profit Dock Gardens along the Thames Path offering 10 km, half marathon and marathon courses with stocked checkpoints and medical support.
A lap trail event at Hyde Hall Farm offering 10k, half, full and ultra options on a 5.4 km mostly off road circuit with aid station, parking and finisher medals.
A 25 kilometre canal run in Welwyn Garden City on 20 March 2027, organised by Camino Ultra, with mostly flat tow path terrain, well stocked aid stations and supportive volunteers.
April 2027
Experience a unique night run at Hyde Hall Farm with 6 or 12 hour challenge options on a 5.4 km loop through the Hertfordshire countryside.
Fifth Galloping Grind 10k trail run on 04 Apr 2027, held on a predominantly anti-clockwise Spring course with limited onsite parking and post-race hot drinks and cakes.
A mostly off road half marathon along the Saltmarsh Coast beside the River Crouch from South Woodham Ferrers to Burnham on Crouch with marked route and stocked aid stations.
An evening 10 km trail run on 22 Apr 2027 with a limited field of 50, a new course provided as GPX and narrative, and self sufficient participation expected.
May 2027
A four leg stage trail relay along the Roach Valley Way covering 23 miles in total. Teams of four navigate by maps and way markers while proceeds support Havens Hospices.
Nuclear Rush is a muddy obstacle race at the Secret Nuclear Bunker Estate near Brentwood offering multiple distances including 6 km with 40 plus obstacles and 12 km with 70 plus obstacles.
A long-established marathon in North Essex organised by Halstead Road Runners, set on scenic low-traffic roads and part of the Essex Road Running Championships. The event has a 500-runner limit, supports local charities and holds a course measurement..
Off road 10 km, 5 km and family runs at Milton Creek Country Park on 9 May 2027 supporting The Oliver Fisher Special Care Baby Trust. Varied trail terrain, route maps and event medals are provided.
Inflatable obstacle-course event at Brands Hatch on 15 May 2027 with 2.5k to 15k lap options, music zones, family entries and finishers' medals.
Experience London's energetic Hackney Moves Festival featuring a half marathon on closed roads, a sunset 10K, and a community festival at Hackney Marshes.
A 10th anniversary half marathon and new 10k in Chislehurst that explores local green spaces and raises funds for The Maypole Project.