Trail Running calendar near Welwyn 2025-2026

Join Thunder Races at Harrold Odell Country Park for scenic 25 km and 50 km trail runs through woodland and countryside. Marked routes, aid stations and finish medals make it a welcoming challenge for trail runners of all levels.

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.

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.

Join the 6th Hannington Hike near Wellingborough on 8 March 2026 for scenic 15.5 or 26.6 mile routes with checkpoints, snacks and a hot meal at the finish. Friendly LDWA event with on site parking and support along the way.

Join the Thames Meander, a riverside race from Barnes along the Thames Path with flat, fast and scenic out and back routes. Choose 10k, half or full marathon routes with waymarked course, stocked checkpoints and medical support.

Steyning Stinger on the South Downs offers Marathon, 30k and Half Marathon routes across scenic multi terrain with support stations and free race photos. Entries close midday 6 March 2026; finishers receive a medal and postrace breakfast.

Run the scenic Hundred Hills 50km at Stonor Park, a tough two loop trail race with about 1200 m of climb. Centurion Running provides aid stations and medical cover, medals and prizes, and a 9 hour finish cut off.

Tackle rolling South Downs trails at the Maverick Hampshire Trail on 14 March 2026 at Matterley Basin near Winchester, with routes of 24 km, 16 km and 5 km. Enjoy woodland, bridleways and scenic climbs, plus self serve water outposts and fr..

Take on the scenic Sevenoaks Circular Challenge on 15 March 2026 with new 15, 20 and 30 mile routes across the North Downs and Greensand Ridge. Checkpoints are indoors and refreshments plus hot food at the finish are included.

The Gratitude 25km is an exciting running event taking place in Broxbourne, UK. This race is designed for runners of all levels, promoting fitness and community spirit. Participants will enjoy a scenic route while challenging themselves to..

The ZigZag 2026 Moo-rathon, Calf and Hen K at the Farm is a trail running event held at Hyde Hall Farm, SG9 0RU. Returning for its third year, the event offers multiple distance options including 10k, half marathon, full marathon, and ultra..

Tackle Winter's End on the South Downs Way with a scenic 50 mile ultra or marathon route between Arundel and Winchester or QECP. Expect chalk ridge trails, ancient woodlands and supportive aid stations along the way.

Join a guided 13 mile trail run around Guildford's Surrey Hills, visiting St Martha's Hill, Shere and the North Downs Way. Enjoy a friendly group pace, kit support and optional post run refreshments.

Run through the South Downs at Stansted House Trail Run, choosing 10 km, 16 km or 21 km routes that wind through woodlands, fields and rolling hills. Enjoy chip timing, a finisher medal and marshals for a memorable spring trail.

Tackle the North Downs Way through rolling Surrey countryside with a choice of a 26.2 mile marathon or a 14 mile route, both finishing at YMCA East Surrey in Redhill. Fully supported with transport to starts, aid stops, GPS routes, medal an..

Explore flat, well kept trails around Windsor Castle with 10K and half marathon options plus a RunThrough Foundation place. Chip timed racing, free photos and post race food and an event village make it a great day out.

Hardwick X Stream is a gritty off road 6 mile cross country at Manor House Farm with streams, fields and plenty of mud. Limited to 300 runners, this spike friendly race gives a memento to every finisher and offers post race refreshments.

Enjoy scenic trail runs through Danesfield woods and country paths with 10k, 6.5k and a 1k Little Sprinters for kids. All entries include chip timing, a finisher medal and village refreshments for a fun family day out.

Experience the Petzl Night Trails 10K at Salcey Forest under torchlight, with Petzl demo head torches on site. Enjoy a flat two lap trail, a canicross option and post race hot drinks plus a medal or tree planting token.

Test your endurance at the Elephant Challenge in Salcey Forest, a six hour timed event where you rack up as many 3.5 mile off road loops as you can. Friendly to canicross and rucking, this scenic trail run suits all paces.