Trail Running calendar near Welwyn 2026-2027

Experience the rolling Northamptonshire countryside with 10 or 20 mile off road races along the Nene Valley. Enjoy fully marked trails through ancient woodlands and riverside paths with optional camping available on site.

Traverse the entire South Downs Way National Trail in this 100 mile non stop journey from Winchester to Eastbourne. Experience 3800 meters of elevation through historic landscapes with full aid station and medical support.

Experience a 50km journey through the South Downs National Park featuring stunning ridge trails and historic landmarks. This well supported event offers a challenging route from Winchester to Queen Elizabeth Country Park.

Discover the heart of the Cotswolds with this versatile trail event offering distances from 10km to a full 100km loop. Walk, jog, or run through rolling hills and historic villages with full support including rest stops and medical teams.

Experience a scenic trail run around South East England's largest lake with distances ranging from 10km to a 50km ultra marathon. Enjoy undulating rural trails and wooded paths with stunning reservoir views throughout.

Experience the world largest inflatable obstacle course in Brighton. Navigate a 5k route filled with massive bouncy structures designed for a fun and active day out in East Sussex.

Test your endurance at MacTuffX London in Barking. Choose from solo, doubles, or relay categories with interval distances of 10x400m or 10x800m. This event is open to all participants aged 18 and over.

Trail marathon, half marathon and 10K at Watership Down on 14 June 2026. Single lap courses, mostly off road, with finishers items, race photos and managed road crossings.

Choose your distance at this flexible timed event along the flat Thames towpath. Run from 5k to an ultra within a 7-hour window and earn a unique finisher's medal. With a 1.5-hour start window, you can begin your run at a time that suits yo..

Experience a multi terrain 5K run through the woodlands and lakeside lawns of Blackpit Brewery near Silverstone. This inclusive event features bespoke medals for all finishers and a scenic route across Northamptonshire farmland.

Experience an atmospheric multi terrain summer evening run in East Sussex. Choose from a 10k, 5k, or junior race followed by a community BBQ and refreshments in the heart of Robertsbridge.

Discover a different side of the capital with a choice of 55km or 25km trail runs along London’s Capital Ring footpath. Experience hidden trails and iconic sights like Richmond Park on these fully signed and supported routes.

Experience a point to point trail race through the ancient woodlands and rural landscapes of three counties finishing with a scenic loop around Grafham Water.

Take on the Phoenix Centaur 100 Mile Ultra at Denbies Wine Estate, a flatish 1 mile off road loop with multiple distance options across the weekend. Enjoy central aid, chip timing and a Centaur medal and buckle for 100 mile finishers.

Run a marathon or half marathon at Denbies Wine Estate on 20 June 2026, tackling a scenic off road loop through the vineyards. Choose attended or virtual entry, enjoy chip timing and a collectible community medal while places remain limited..

Run 1 mile each hour for 24 consecutive hours at Denbies Wine Estate in P24 The Longest Attended Day, an off road challenge for attended and virtual runners. On site camping and a hefty finisher medal await but places are limited.

Experience the beauty of the South Downs National Park with distances ranging from 30km to a 100km nonstop ultramarathon. Enjoy fully supported trails passing historic landmarks and stunning coastal vistas near Chichester Harbour.

Join the Phoenix Hydra 75 Mile Ultra at Denbies Wine Estate in Dorking for a scenic 1 mile off road loop with chip timing and a staffed aid station. Distances run from 12 hour to 100 miles and all entrants receive a free memento.

Run the Maldon Ultras on 20 and 21 June 2026 in Maldon, with 100 mile, 50 mile and 30 mile lapped races across fields, woodland and vineyards with estuary views. Small fields and scenic off road laps make for a friendly yet fierce ultra.

The Castle Bytham 5k Chase will take place in Castle Bytham on Saturday 20 June 2026. You can run 5 kilometers.