Trail Running calendar near Welwyn 2025-2026

Take on the Hadleigh Legacy 10k at Hadleigh Country Park on 22 Feb 2026, a single lap off road trail with hills, mud and lovely views. Enjoy race photos, a bespoke medal and prizes for top finishers.

Run the Thetford Festival of Running through scenic Thetford Forest, choosing from 5k to ultra on a 5 km forest loop. Limited to 300 entries with finish refreshments and proceeds supporting forest upkeep.

Enjoy a crisp Winter Trail Run through Gatton Park with a scenic 5K loop or a 10K double lap, plus a Canicross race for runners with dogs. Fast, friendly and compact, the event includes a finish medal, refreshments and prebookable parking w..

Run the North Downs Ridge 50k, a scenic trail ultra from Denbies Wine Estate near Dorking. Enjoy rolling Surrey countryside, four aid stations, medical cover and a UTMB qualifier for runners after a classic long day on trails.

Join Dirt Run, a two round multi terrain series in Northamptonshire offering 5 km to 15 km options at Irchester Country Park on 18 Jan and Brigstock Country Park on 22 Feb. Expect trails, a notable hill and a custom finisher medal.

Join a guided 10 km trail run through Thursley National Nature Reserve, across open heath, pine wood and the boardwalk voted Britain's Favourite Path. Enjoy a friendly group pace with dusk and headtorch evenings, kit trials and a possible p..

Join the G3 Series at Newlands Corner, Guildford on Saturday 28 February 2026 for scenic 10 km and 15 km runs through Surrey countryside. Single entries and series bundles are available; register by 26 February.

Join a guided 30 mile South Downs Way ultra from Harting Down, ideal for first time ultra runners looking for a friendly, non competitive challenge. Savour rolling chalk hills, ancient yews at Kingley Vale and expert guided coaching along t..

Explore scenic coastal paths around Chichester Harbour with views of Bosham Hoe, Itchenor and the South Downs and a short foreshore crossing at low tide. Choose 16 km or 21 km routes with canicross options and a friendly race day vibe.

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.

Discover scenic trails around Pitsford Water with marshaled 10k and half marathon routes that wind through village lanes and farmland. Enjoy water stations, medals and awards while supporting local foodbanks at Brixworth Country Park.

Take on a scenic half marathon in Thetford Forest on a traffic free circular trail, with chances to spot deer and wild thyme across varied underfoot surfaces. Finishers get a medal and podium trophies for the top three men and women.

Run a scenic 10 km along the Thames and Jubilee River through Windsor, Dorney and Eton, finishing by the Windsor & Eton Brewery. Multi terrain course with a medal and post race pint makes this a perfect social and club outing.

Join a guided 10km trail run at Silent Pool near Guildford along the North Downs Way and past film locations from The Holiday and Bridget Jones Diary. Group pace, head torch and shoe trials, and a post run alcohol free beer add to the fun.

Join the Humanity Direct Amersham Ultra on 7 March for scenic footpath and bridleway routes of 10 km, 25 km or 50 km starting at Dr Challoner's School. Run or walk to fundraise for Humanity Direct and earn a finisher medal.

Take on a scenic, strenuous trail from Helen Gardens Eastbourne across chalk and forest with stunning views of the Seven Sisters cliffs. Choose 10K, half, marathon or ultra on a marked and timed course with a finishers medal.

Run the scenic Thunder Races at Harrold Odell Country Park with 25 km and 50 km trail options through woodland and countryside. Marked routes, aid stations and a finisher medal make for a rewarding, well supported race day.

Brutal at Chawton is a raw trail run across muddy woodland, water filled craters and steep sided valleys with tight technical trails. Options for 5 km or 10 km include dedicated canicross waves so bring your dog and expect big challenges.

Run scenic laps along the Thames towpath in Walton on Thames at the Ladybird Run, on flat off road trails with timed entries or a one hour rock up and run start window. Pick 5 km to ultra distances and complete as many laps as you like with..

Leith Hill Half Marathon is a challenging 13.1 miles trail race across Surrey with about 1,800 feet of ascent and a summit finish at Leith Hill Tower. Enjoy scenic singletrack, a reusable medal, local beer and a full cooked breakfast.