Trail Running calendar near Letchworth Garden City 2025-2026

Autumn 100 : event overview The Autumn 100 is a 100 mile (approximately 161 km) continuous trail race held on 18 October 2025 from Goring & Streatley on the River Thames, Oxfordshire. The route is four out-and-back spurs of about 25 mil..

Gatliff Marathon : 18 October 2025 The Gatliff Marathon is an annual challenge walk, jog or run. The 2025 event is the 41st edition and takes place at Edenbridge Cricket Club, Matthew Cox Community Pavilion, Blossoms Park, Mill Hill, Edenbr..

Herstmonceux 8km Trail Race is a picturesque off-road loop around Herstmonceux, centred on Herstmonceux Village Hall (BN27 4JX). The 8km course winds through fields, bridleways and woodland with views toward the South Downs; distance is app..

Take on the Bedgebury Forest Half Marathon or 10K on 19 October 2025, winding through scenic, traffic free trails in the national pinetum. Expect mud after rain, a bespoke medal and free photos, with limited on the day entries if available.

Run a scenic half marathon through Thetford Forest this autumn, tackling forest trails, grassy paths and sandy tracks on a traffic free, signed circular route. Enjoy eco friendly medals, pro photos and a relaxed nature filled race day.

Take on the Viper 5 Mile autumn trail in the dark around Mill Green, an atmospheric night run with just 50 places. This self sufficient event requires headtorches and phones, and finishes back at The Viper for a well earned drink and food.

Challenge your navigation at Uckfield KNC on Thursday 23 October. Join Southdowns Orienteers for a 60 minute score orienteering event with limited places and fun for juniors and seniors.

Choose your distance on the day from 7 km up to a 40 mile ultra on scenic mixed trail and road loops around Chalfont Park. Drop bags, pacers and crew are welcome and there is an aid station plus a trained medic on site for support.

Run scenic circular routes along the north River Blackwater estuary with 26.5 mile and 18 mile options near Heybridge Essex. Enjoy checkpoint snacks, a finish meal and a finisher certificate on this friendly LDWA event.

Epping Forest Wildwood Trail Series Half Marathon & 10K takes place in Epping Forest, London, with start/registration at Chingford Plain, Rangers Road, E4 7QH. Runners choose between a Half Marathon (two laps) or a 10K (one lap) through anc..

Run 47 miles along the Thames Path and Ridgeway from Iffley to Henley on 25 October 2025, a scenic but testing point to point ultra with muddy trails and riverside views. Finishers get a medal and top placings win prizes.

Tackle the Stort30, a scenic 30 mile ultramarathon along the River Stort and Lee navigation from Bishop's Stortford. Mostly grassy trail with muddy sections, aid every five miles and finish line clubhouse facilities.

Thames Path Trail Run : Windsor Racecourse, 26 October 2025 The Thames Path Trail Run takes place at Windsor Racecourse on 26 October 2025. The route follows sections of the Thames and nearby countryside. Distances offered: 21km 16km No do..

Trail Run Canterbury is a Canterbury-based trail and multi-terrain running event anchored at St Edmund’s School on St Thomas Hill. It offers three distances: 5.5, 10 and 20 miles. The route winds along trails around the edge of Canterbury,..

Timed 4 or 6 hour challenge on a scenic 5.3 km multi terrain lap through Ferry Meadows, with aid station support and a bespoke finisher medal. Cupless event so bring your own bottle and virtual places are available.

Irchester Spooktacular - Irchester Country Park, 30 October 2025 Irchester Spooktacular is a Halloween-themed night-time run held at Irchester Country Park. The event offers two marked and marshaled routes on woodland trails and hard-packed..

Event details The Halloween Trail is a narrative trail race on 31 October 2025. The course is described as about 8.5ish miles and follows a circular route around the town of Maldon. The route is approximately 95% off road and covers a varie..

2025 Winter Warrior 50km Ultra The Winter Warrior is a 50 km trail ultramarathon on Saturday 1 November 2025, running from Trowse in Norwich to Hope Church in Diss along the Boudicca Way. The route stays on the Boudicca trail and passes thr..

The The Maverick Dark Hampshire will take place in Farnham on Saturday 1 November 2025. You can run between 5 and 15 kilometers.

Event overview The Chiltern Ridge Winter 50K is a single-loop trail race held in the Chilterns, with the start and finish at Berkhamsted Cricket Club. The next edition is on 1 November 2025. The event distance is 50K with approximately 800..