Trail Running calendar near Welwyn 2026-2027

We have found 513 Trailruns within 80 miles of Welwyn. See below where and when you can find the races.

Celebrate the 30th anniversary of this award winning marathon through the scenic rolling hills and hidden back roads of North Essex. This well supported event features a community focused atmosphere and low traffic rural course.

Experience a unique multi terrain race through the historic Northamptonshire countryside starting in Naseby. Choose from five distances ranging from a 10K road race to a 35 mile ultra marathon with rotating course directions each year.

Experience a scenic road race through the undulating Suffolk countryside with marathon and half marathon options. This measured course features quiet roads and local aid stations for a rewarding running experience.

Experience a scenic off-road trail run at Milton Creek Country Park while supporting neonatal care. This event features 10K and 5K distances plus a Junior Run, complete with bespoke medals and a friendly atmosphere.

Experience a carbon neutral trail run through the beautiful vines of the Rathfinny Wine Estate. Choose between a 10.7 km or 21.4 km hilly loop with views of the South Downs National Park.

A self-guided 13-mile run along Letchworth's scenic Greenway trail. This is a run, not a race, due to road crossings. Finishers get a wooden medal and refreshments, with profits supporting a local youth mental health charity.

Experience a scenic trail run through the South Downs featuring 20k, 10k, and junior distances. This well organized event includes chip timing, finisher medals, and hilly routes with views over the Cowdray and West Dean Estates.

Explore the beautiful Chiltern Hills on this guided 30km trail running adventure. Enjoy 500m of ascent through woodlands and ridges with professional run leaders and a finishers medal included.

Experience a vibrant trail running series at Dunstable Downs or Bristol. With distances from 1km to 10km, this inclusive event features live music and food for a complete carnival atmosphere.

Hairy Legs is a cross-country charity event for all ages, held on a scenic, hilly woodland course. Distances are based on unmeasured loops, and there are solo, relay, and shorter youth options. Fancy dress is encouraged, with prizes and a f..

Experience a scenic single lap trail race through the bluebell woods of Hampton Estate and Puttenham Common. Enjoy chip timed racing with bespoke medals and onsite refreshments in a beautiful Surrey setting.

Enjoy a scenic trail run or walk through the village of East Hendred on an undulating 5k course. Kids can also join the fun with a 1k obstacle run around the sportsground.

Experience a ten mile multi terrain lap through the scenic Cotswold countryside and Coln Valley. This undulating course features fields, footpaths, and a river crossing near the historic Chedworth Roman Villa.

Experience a cross country run through the Hertfordshire countryside with 5km and 10km distances. This community event in Little Gaddesden includes junior categories and mini races for children.

Experience a unique multi terrain 5k run through the fields and nature trails of West Lodge Farm Park. Watch for local animals as you navigate this rural course and earn a bespoke finisher medal.

Enjoy a flat and traffic free summer race series at Dinton Pastures Country Park. Choose from 5km or 10km distances with chip timing and a dedicated 2km kids run for a complete family evening.

Experience a beautiful coastal journey through Suffolk and Essex on this flat trail ultra for runners and walkers. Choose between 100 mile, 50 mile, or 50 km distances along unspoilt estuaries and quiet heathland.

UTMB Index

Experience a 50 mile point to point journey along the scenic North Downs Way National Trail. This historic event takes runners from Farnham to Knockholt Pound with 5,600 feet of total elevation gain.

UTMB Index

Trail marathon and 16 mile races across the Berkshire Downs with routes on the ancient Ridgeway, timing chips, aid stations every 3 to 4 miles and a hand thrown mug for finishers. Runners must meet a 7 hour cut off.

Experience the world’s largest inflatable obstacle course at the iconic Brands Hatch circuit. Tackle a series of massive inflatable structures in this unique 5K event held in the heart of Kent.