Trail Running calendar near London Borough of Richmond upon Thames 2026-2027

ATW Grafham 5K and 10K at Grafham Water on 25 Oct 2026 offers timed 5 km and 10 km races with camping option, charity fundraising and on site parking.

Trail marathon and half marathon near Canterbury through Kentish countryside; marathon requires navigation and both races use CCCU Sports Centre as HQ.

Looped races at Chalfont Park and Chalfont St Peter let runners choose distances from a 7K loop to multi lap ultras. Aid station, clear course marking, crew support and medical cover are provided.

A countryside walking event from Blackmore with a 26 mile figure of eight route and an 18 mile option, forming part of the Essex and Herts Triple Challenge.

A guided 10 km trail run through High Lodge in Thetford Forest, led at a conversational pace with group placement by ability. Mostly flat mixed terrain with a couple of small hills and practical tips on trail running.

A Halloween themed night time run at Irchester Country Park on 30 October 2026 offering 5k and 2k family runs, finishers medals, Halloween treats, free event photos and prizes for top 3 men and women in the 5k.

Chiltern Ridge Winter 50K is a single loop trail race from Berkhamsted covering 50 km with 800 m ascent, a fully marked route, three aid stations and a nine hour limit.

A Halloween themed *6.66 km* trail run in Chelmsford on 31 October 2026 with GPX/Strava route support, fancy dress prizes and a brewery finish offering a medal, drink and crisps.

Night laps by head torch through Alice Holt Forest with three route lengths, one refuel outpost per lap, free parking and a metal finisher medal.

Evening Halloween trail run at Hogmoor with kids 3.3K, adult 6.6K or 10K options, a canicross race, spooky features and medals for finishers.

A timed, lap-based run along the Itchen Way in Winchester with 2.62 mile loops, a seven hour limit, flexible start times, an aid station with vegan options, and a bespoke finisher's medal.

Coastal trail running on West Wittering Beach with 15.3k, 10k and 5k routes across sandy flats and short trails, chip timing, water stations and a finisher medal. Canicross is accommodated and the course is clearly signposted.

Trail races in Wendover Woods on hilly, multi terrain forest loops with marathon, half marathon, 10 km and a junior run plus on site amenities and parking.

A 7 hour time challenge in the Northampton Washlands with flexible distances from 3 km to 50 km, medals, distance pins, goody bags and aid stations.

An after dark multi terrain 10 km and 5 km event in Leigh on Sea with chip timing, mandatory headtorches and sustainably sourced finishers medals.

Night and dawn five mile runs in Market Harborough that pass through the 422 m Oxendon Tunnel. Headtorch required, entries are £23 single or £40 for both, and all finishers receive interlinking medals.

Two days of marathon and half marathon races around Caldecotte Lake in Milton Keynes on 6 and 7 November 2026, with multi-lap clockwise courses, on-course water and toilets, enforced time limits, and bespoke finisher medals.

Take on flat, scenic laps along the Thames towpath in Walton on Thames with flexible starts and distances from 5 km to ultra. Limited places, aid stations, digital results and medals make this a friendly, festival style challenge.

Trail runs from Goodwood Racecourse into the South Downs National Park with three distance choices and canicross options. The course mixes forest tracks, bridleways and single-track trails with coastal and downland views on clear days.

Night trail running at Stonor Park in the Chiltern Hills with 17 km, 13 km and 7 km routes, marked courses, outposts on middle and long routes and no dogs allowed.