Trail Running calendar near Chelmsford 2026-2027

The Stopsley Trail Race on Sunday 9 August 2026 offers 5K, 5 miles and 10 miles on scenic undulating trails along the Bedfordshire and Hertfordshire border. Entries include chip timing, bespoke medals, free photos and participant goodies.

A summer charity trail event in Cold Norton on 9 August 2026 offering a 10 km and a 13.1 miles route. Routes are unmarked narrative trails and the event raises funds for Farleigh Hospice while requiring participants to carry their own cup o..

A flexible seven hour timed challenge on a signed Thames-side loop near Egham, with options from 3 km up to 50 km. Finishers receive a medal and goody bag and aid stations are provided each lap.

Two trail ultras—50k and 100k—route through Market Harborough countryside and long-distance footpaths, with GPX files, staffed aid stations, mandatory kit requirements, free guided recces and free race photos; entries carry standard fees an..

Celebrate twenty years of trail sports with a 15 mile run or a 15 km hike through scenic environments. Enjoy a flexible start format and post race rewards in a social pub garden setting.

An off road half marathon on 16 August 2026 based at Henfield Leisure Centre, featuring riverbank and disused railway sections with flint paths and stiles. Facilities include changing rooms, parking and medals for all finishers.

A seven hour timed riverside event at Wraysbury Skiff & Punting Club offering lap based distances from 3 km up to 50 km, finishers medals and goody bags, aid stations and distance pins for half marathon and above.

Trail races at Wendover Woods feature a half marathon, 10k, 5k and junior race across steep woodland with 181 m of climb. Entries include a themed medal, free photos, chip timing and post race goodies.

A 52 mile route across the South Downs National Park with 7,000 ft of ascent and a 23 hours time limit, starting and finishing at Plumpton College. The event includes six checkpoints, refreshments, basic overnight facilities and an official..

A ten day running series in Walton on Thames from 22 to 31 August 2026 offering daily themed rubber ducks and ten giant spinning ducky medals, with distances from 5 km to ultra and certified out-and-back routes along the Thames towpath.

Combined half and full marathons run through Richmond Park on 23 August 2026, using a lap route from Sheen Gate that follows the Tamsin Trail with aid stations and finishers receiving a medal, mug and buff.

A South Downs trail running event based at Lancing College offering 5K, 10K, Marathon and 50K routes across grassy trails, chalk paths and ridgelines, with marked, chip-timed courses and aid stations.

Experience a scenic run through the historic Richmond Park on this UK Athletics Affiliated course. Choose between a half or full marathon distance following the trails and private roads of London’s largest Royal Park.

A trail run entirely within Richmond Park offering half marathon and marathon distances, a route past the White House and park lakes, and on-course drinks and feed stations.

A self-navigation marathon along the Colne Valley Path from Stambourne, passing Great Yeldham and the mighty oak, finishing on the Cymbeline meadows. Aid stations are placed about every 10 km and the event is cupless.

Summer community races of 5 km and 10 km from Whitwell and Reepham Railway Station along Marriott's Way, with medals for finishers and fundraising for Keeping Abreast Breast Cancer Reconstruction Support Charity. The races are not timed.

A ten kilometre trail run on 23 August 2026 using the original predominately anti clockwise route, with a limited edition event T shirt included and results posted within 48 hours.

A last person standing backyard ultra at Gosfield School in Essex where runners repeat *4.167-mile* loops each hour until one runner remains. The event includes camping, showers, a small aid station and a prize for the winner.

London Backyard Ultra at Frylands Wood Scout Outdoor Centre on 29 August 2026 asks runners to complete *four miles* each hour until one remains. The event includes parking for one car, hot showers, water, drinks, snacks, and photography.

An outdoor mud and obstacle assault course near Dorking, Surrey, with a permanent course and over 100 natural and man made obstacles. Distance options include 5 km, 10 km or multiple laps for solo runners, teams and charities.