Trail Running Calendar South East (England) 2026-2027

Timed trail races on a 2.5 km loop at Leybourne Lakes on 20–21 June 2026, offering 6h, 12h and 24h formats for solo runners and relays. Official timing, live lap updates, medals and on-site medical support.

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.

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.

A 24 hour running event near Caldecotte Lake around Midsummer, open to individuals and teams of 2 to 6. Runners complete 6.55 mile laps with camping, teepee hire, free snacks and showers on site.

Volunteer organised trail races on Horsell Common with family friendly distances from a 2 km kids race to a 21 km option. Proceeds support local charities and the event emphasises minimal environmental impact.

A community 10 km, 5 km and free junior run around The Moor in Hawkhurst on 21 June 2026. The multi terrain undulating course features finish line cake, a free half pint for finishers and on site stalls.

Experience the twilight beauty of Ardingly Reservoir during this midsummer evening run. Choose between a 5k or 10k distance on a scenic undulating trail featuring a fully stocked aid station and finisher medals for all.

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 twilight trail race at Ashburnham Place with 10k, 5k and a junior run. The event raises funds for four charities and offers on site parking, a bespoke medal and on site food.

Run the Seasons at Cowdray on 26 June 2026 offers 3km and 5km races plus a 10km with dog friendly CaniRun options. The event includes stacking medals, course maps, free photos and an on site BBQ and bar.

A last person standing backyard ultra near Alfriston where runners repeat hourly laps of at least 4.167 miles until only one can start another lap. Limited field, token checks each loop, basic aid station and barn facilities.

A seasonal trail running series at Cowdray Estate featuring 5km, 10km and 10 mile races across spring, summer, autumn and a winter night run, with a dedicated kids series and a summer event that includes a BBQ and bar.

Trail running at Cranleigh Showground on 27 June 2026 with five marked routes through Winterfold, Hurtwood Forest, Leith Hill and the North Downs Way; distances range from 5 km to 52 km and routes have varying outpost support.

Single-loop off-road races at Matterley Estate in the South Downs National Park on 27 June 2026. Choose 10km or a 21km half marathon over gravel, grass and woodland with chip timing and a finishers medal.

A family festival at Culden Faw Estate on June 27, 2026, focused on a children's obstacle course and a lively event village with food and activities. Race options include two youth OCR categories and a festival-only entry.

A 5 km obstacle course at Stanmer Park on 27 June 2026 featuring muddy climbs, crawls and slides across fields and woodland. The event is for ages 13 and over, has staggered wave starts, and a minimum fundraising target of £50.