Trail Running calendar near Hertfordshire 2026-2027

Riverside races at Wraysbury Skiff & Punting Club near historic Runnymede. Marathon, half marathon and 10 km run on flat out and back laps along the Thames with marked turnarounds, check points and chip timing.

Looped trail and road races in Chalfont St Peter where runners choose on the day between 7k, longer loops, marathon and ultra marathon distances with aid, pacing and crew support.

Take on Any Kind of Weather Runner at Northampton Active on 21 February 2026, a lap based six hour challenge where you can choose distances from 5K up to an ultra. Limited to 80 entrants, enjoy aid stations, a finishers medal and a goody ba..

A roughly 42 mile trail ultra along the historic St Peters Way from Chipping Ongar to the ancient chapel at Bradwell on Sea. The route uses footpaths and bridleways, has four staffed checkpoints and strict compulsory kit requirements.

Single lap trail races in the Meon Valley from Queen Elizabeth Country Park offering 16 mile, marathon and 50km options with marked routes, aid stations and mandatory fluid carriage.

A one lap, off road 10k at Hadleigh Country Park featuring hilly, muddy trails and kissing gates. The event includes an elite wave, route marshals, a bespoke medal and free race photographs.

This festival offers a range of distances on a looped course through Thetford Forest. With an aid station on the lap and complimentary refreshments, it's a self-contained event. Part of your entry fee supports the forest's upkeep.

Tackle a winter trail at Gatton Park on 22 Feb 2026 with a choice of 5K or 10K loops. Canicross and trail runner categories, friendly social vibes and a finisher medal make it a great day for runners aged 11 and up.

A 50k trail on the North Downs Way from Denbies Wine Estate, covering 2986 ft of ascent with four aid stations and a 10 hour cut off. The fully signed route includes a woodland loop at Norbury Park and a wooden finisher medal.

Round 2 at Brigstock Country Park offers single-lap trail running over **7.5 km** or **15 km**, with waymarked routes, views of Lyveden New Bield, parking, toilets and a custom finisher medal.

The Terminator 2026 is a tough but rewarding 12 mile trail race around Pewsey, Wiltshire, mostly off road with muddy climbs and high point views. All finishers receive a unique T shirt and race village treats await.

Trail and canicross races at Gatton Park on 22 February 2026, with 5K and 10K multi-terrain loops, chip timing, marshals, on-site parking, bag drop and medals for both humans and dogs.

Guided 10 km trail runs at Thursley National Nature Reserve in Surrey on 25 February 2026 and 7 July 2026. Flat group routes include a boardwalk section, headtorches for night runs and a car park; cost £16 per person.

G3 no.3 is a running event at Newlands Corner, Guildford on 28 February 2026 offering 10 km and 15 km distances with paid entry and entries closing on 26 February.

Guided 30 mile trail run from Harting Down along the South Downs Way, visiting Beacon Hill, Cocking Down and Kingley Vale. Presented as suitable for first time ultra runners, run at a group pace with practical support and route guidance.

Chocothon is a friendly timed lap on a flat 5.3 km riverside towpath, letting you complete as many laps as you can within a seven hour window. Distances from 5 km to ultra, medals and aid stations make it perfect for all abilities.

Trail races from Brixworth Country Park around Pitsford Water, offering a 10k and a half marathon that visits nearby villages. The event is fully marked with water stations, first aid cover and prizes for top finishers.

A circular half marathon through Thetford Forest on mixed trail surfaces, with manual timing, finisher medals and podium trophies. The race is cupless with refill stations and has a 3.5 hour cut off.

Multi terrain 10 km race starting and finishing at Windsor & Eton Brewery beside the River Thames. The route follows the Thames and Jubilee River and finishers receive a medal, a Windsor & Eton pint cup and a free drink.

A seven mile self-navigation trail at Waldegraves Holiday Park on 01 Mar 2026. Entry is limited to 150 runners; fees include a £4 bar voucher and results will be posted on essextrailevents.com.