Trail Running calendar near Twickenham 2026-2027

A muddy 5k obstacle event at The Common in Southampton on 20 June 2026 where participants aged 13 and over climb, crawl and slide through a marked route while raising funds for cancer research. Waves start every 15 minutes.

MK24 Midsummer RunFest is a 24 hour lap event at Caldecotte Lake on 20 and 21 June 2026. Individuals or teams of two to six run 6.55 mile laps with camping, tee pee hire, free snacks and medals for distance milestones.

Celebrate the longest day at the Summer Solstice Challenge around Abberton Reservoir, a timed loop with 5 km laps. Run as many laps as you like, earn a medal and support Essex Wildlife Trust.

A 21.2 km trail half marathon on the National Trust's Dunstable Downs on 21 June 2026, featuring 450 m of ascent, two on-route aid stations and fully marked trails with GPX support.

Run through the historic landscapes of Horsell Common where the Martians first landed in literature. This volunteer led charity event offers trail routes from 2 km to 21 km in a scenic Site of Special Scientific Interest.

A 10 km trail run at the Tusmore Estate near Bicester, hosted by Twisted Tree Brewery, with a canicross category. The mostly off road course includes two refill stations, chip timing, a medal, a pint cup and a free drink.

Community running event in Hawkhurst on 21 June 2026 offering 10k, 5k and a free junior race on a multi terrain undulating course, with finish line cake, a bespoke medal and funds raised for local community projects.

Circular countryside routes of 26 miles and 18 miles around Baldock in Hertfordshire, with checkpoints, refreshments and a light finish meal. Entries close 13 June or when the 175 place limit is reached.

A trail running event set inside Trent Country Park, Enfield, with wooded paths, grassy sections and some hills. Races include a 10 km senior race, a 4.5 km junior race and a 2 km kids fun run.

A flat, timed 10 kilometre out-and-back from the toll bridge in Shoreham to Bramber and back on 21 June 2026, with a halfway aid station, full marshals, 4x4 pickup and a new medal; entries open 20 March.

A scenic off road 10 km trail at Panshanger Park with chip timing and a sustainable finisher medal; proceeds support local charities and a family fun run is included.

A 5k obstacle event at Trinity Park, Ipswich on 21 June 2026 that raises funds for Cancer Research UK. The grassy, fairly flat showground course features climbing, crawling and sliding obstacles and uses staggered wave starts.

A twilight trail race at Ashburnham Place in Battle, East Sussex offering 10k, 5k and a junior run. The event supports four charities and features on-site charity tents, a BBQ and a free sports massage.

Race two of the 2026 Trifarm trail series, this 10K summer run is over 95% off-road on public paths. Starting near a humpback bridge at Trifarm in Boreham, the anticlockwise course finishes with a lap around the lake.

Experience a scenic trail run through the Cowdray Estate and South Downs National Park featuring distance options for all ages including dog friendly categories and a stacking finisher medal.

Complete three races over three days to achieve a full marathon distance at the Colworth Estate. This multi terrain event in North Bedfordshire offers distances of 5 miles, 8.1 miles, and a half marathon.

A backyard ultra at Longbridge Farm Barns near Alfriston where runners complete at least 4.167 mile laps every hour until one runner remains. The event uses a token system, timed laps, a small aid station, onsite support and sustainability..

A multi-distance trail event at Hyde Hall Farm on 27 June 2026 offering distances from 5k to ultra, on-site parking, an aid station at the lap point, baggage storage and a bespoke finishers' medal.

Explore the scenic Surrey Hills and North Downs Way with five trail distances ranging from 5 km to a 52 km ultra. Run through ancient forests and rolling fields with punchy hills and fully marked courses.

Experience an off road adventure through the private Matterley Estate in the South Downs National Park. Choose between a 10km or half marathon distance on a well marked course featuring gravel tracks and woodland trails.