Trail Running calendar near Chelmsford 2025-2026

The Three Castles 50km Ultra Marathon is a scenic race held in Kent, England, starting in Rochester and finishing at Tonbridge athletics track. The flat course follows the River Medway, passing three medieval castles, charming villages, and..

Beat The Sunset 50KM is a flat, single lap ultramarathon along the Thames Path and Jubilee River near Maidenhead, mostly off road with four aid stations. Enjoy a scenic late afternoon run with chip timing, mementoes and live tracking.

Take on the Ridgeway Challenge, an 86 mile point to point trail race along Britain’s ancient Ridgeway from Ivinghoe Beacon to Avebury. Tackle the full route in 28 hours for a true long distance test across rolling chalk downland and prehist..

The Circuit du Sore Legs is an annual running event held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Now in its sixth year, it offers a unique challenge of completing various distances on a 400-meter athletics track, in..

Join a guided trail half marathon around Guildford, passing St Martha's Hill, the North Downs Way and picturesque villages like Shere. This friendly group run is led by an experienced trail guide and suits runners who can hold about a 10 mi..

Join the Griffin Challenge at Braybrooke Taproom on 3 June 2026, a six hour looped event on the Griffin Trail where runners, walkers and hikers do as many laps as they like. Celebrate after with coffee, pastries and a cold beer.

Event overview The event takes place on Friday, 05 June 2026 as a 7 hour timed challenge. Participants may run any distance they choose within the time limit. The minimum distance to be an official finisher is 3 km. The normal lap length is..

The Sundowner Marathon is a unique running event held in Purleigh, Chelmsford, England, featuring a scenic course that passes along canals, over waterfalls, through vineyards, woodlands, and coastal saltmarshes. This marathon offers a disti..

Run the clock at Suffolk Back Yard Ultra Festival in Thetford Forest, completing a 4.167 mile loop each hour until one runner remains to win £1,000. Expect forest trails, on site camping, hot food and a lively community vibe.

The Valley of the Owls Run is a multi-distance running event held at the Suffolk Running Centre in Bury St Edmunds, Suffolk. The scenic course passes through the village of Ousden, known as the Valley of the Owls, featuring some of England’..

Join Chase The Sun at Clapham Common on 10 June 2026 for a friendly 5K or 10K on a flat park circuit that passes the bandstand. Enjoy a themed medal, free photos and post race treats in a fun community atmosphere.

Run the scenic Bewl Water trails around the reservoir in Lamberhurst, Kent, on off road woodland paths and quiet country lanes with lake views. Distances from 10 km to marathon and 50 km ultra make it ideal for every trail runner.

Challenge yourself on the Nene Valley Trail Run, with 10 and 20 mile off road routes through rolling Northamptonshire countryside, bluebell woods and rivers. Camp under the stars, enjoy well stocked aid stations and support local charity Ki..

Wendover Woods Half Marathon & 10k, staged in Wendover Woods, Upper Icknield Way, Aston Clinton, Buckinghamshire, offers trail runners a forest challenge. The course comprises a hilly 10k multi-lap route through Wendover Wood forest, with H..

YHA 14 mile trail run The event is scheduled for 14 June 2026 and covers 14 miles on trail. The race holds TRA permit 7715. The course begins with a climb and includes sections that can be slippery, with muddy puddles and chalk descents. Co..

Event overview The Hampshire Hoppit is a trail running event held on Sunday 14 June 2026. Races start and finish at Watership Down on the Hampshire/Berkshire border. The event offers the following distances: Marathon Half marathon 10K Eac..

The Phoenix Denbies Marathon & Half Marathon, held at Denbies Wine Estate in Dorking, Surrey, offers a unique off-road trail running experience on a flat-ish 1-mile loop with slight inclines. Scheduled for June 2026, the event features flex..

Solstice at the Lakes is a timed trail running event held at Leybourne Lakes Country Park in Kent, featuring 6-hour, 12-hour, and 24-hour race options. Participants can compete solo or in teams (pairs or up to four runners) on a flat, fast,..

The Centaur 100 Mile Ultra, hosted by Phoenix Running, is a unique 100-mile trail running event held at Denbies Wine Estate in Dorking, Surrey. Designed for both seasoned ultra runners and first-timers, the race features a flat-ish, single..

Event overview P24 - The Longest Attended Day is scheduled for Saturday 20 June 2026 at Denbies Wine Estate in Dorking, Surrey (RH5 6AA). The format requires participants to run 1 mile at the same time each hour, repeated 24 times across 24..