Trail Running Calendar South East (England) 2025-2026

Run the Martian Race at Horsell Common on 21 June 2026 and follow routes through the sandpits immortalised in H.G. Wells The War of the Worlds. Volunteer organised and charity focused, with distances for all ages.

Join the Summer Run the Seasons at Cowdray Estate on 26 June 2026 for scenic 5km, 10km and dog friendly canicross routes past the polo lawns, ruins and the South Downs. Celebrate at the finish with an interlocking medal, free photos and a B..

Enjoy scenic Thames Valley trails at Marlow Rugby Club with 5K, 10K and Half Marathon options on well marked off road courses. Chip timing, free race photos and a themed finisher medal make this a fun, sustainable event for all abilities.

Join a guided 10km trail run around the Devil's Punchbowl in Hindhead, enjoying rolling hills and a scenic pause with great views. This friendly group paced run is led by an experienced guide and runs at sunset or by headtorch in winter.

Event overview The SATURN Midweek Chasing Numbers event takes place on Friday, 3 July 2026 at Wraysbury Skiff & Punting Club, Egham (TW20 0AE). It is a 7 hour Time Challenge with flexible start times available throughout the day. The ev..

Follow the Serpent Trail from Petersfield through the South Downs, heath and woodland with distances from 10 km to 100 km. Camping, coach transfer, a kids race, food and a licensed bar make it a weekend festival for runners and walkers.

On 5 July 2026 the Chiltern Ridge Half Marathon offers a scenic off road challenge along The Ridgeway near Wendover, with rolling climbs and woodland views. Entries are limited to 350 runners so book early for this memorable trail experienc..

Join a guided 10 km group trail run through Thursley National Nature Reserve, featuring heathland, boardwalks and abundant birdlife. Suitable for steady runners at about 10 min per mile pace, with sunset and night sessions plus kit trials.

Race to the Stones runs along The Ridgeway, Britain’s oldest footpath, ending at Avebury Standing Stones. In 2026 it offers 50 km and 100 km distances, either non-stop or split over two days, with a ~25 hour cut-off, on 11–12 July. Runners..

The The Maverick Chilterns Trail will take place in Wendover on Saturday 11 July 2026.

Run through scenic Wendover Woods with 5K and challenging 10K trail options plus a 1.5K accessible loop. Limited to 500 runners, with chip timing and a finisher medal for all.

BigHeat Trails (FIRE) is the third event in the Classic Element Trail Series, held at Rother College in Midhurst, Surrey. Inspired by the element of fire, this trail running event offers two challenging single-lap distances: a marathon and..

Join a friendly 7 hour timed run along the Thames at Wraysbury, with flat paved loops suitable for road shoes. Pick distances from a 3 km loop up to marathon and ultra, and enjoy a medal plus goody bag and riverside views.

Run The Rings Marathon or 50K from Shoreham by Sea along riverside trails and the South Downs ridge for sweeping coastal views. Fully marked and chip timed, this scenic challenge offers bespoke medals and a lively finish.

Enjoy a scenic, flat trail run around Maidenhead Commons and Summerleaze Lake on Sunday 26 July 2026. Choose 5K, 10K or half marathon and earn a themed medal with free race photos, chip timed results and a lively event village.

Explore the scenic North Downs from Loseley Park basecamp with 10 km, 25 km, 50 km or point to point routes across Surrey hills. Fully supported with regular aid stations, medical cover, GPS tracking and on site camping or rooms.

Scenic 7 hour timed run along the River Thames on 7 Aug 2026 lets you choose any distance from 3 km to ultra. Finishers get medals and distance pins, with aid stations, cafe and vegan goody bags.

Run from Oxford to Henley along the scenic Thames Path in the MTC Oxford Ultra, a 49 mile point to point ultramarathon on 7 August 2026. Enjoy riverside views, timed checkpoints and a bespoke finisher medal with a choice of tech shirt mug o..

Tackle the North Downs Way 100, a continuous 103 mile trail from Farnham to Ashford across the Surrey and Kent ridgelines with a 30 hour time limit. Limited to 250 starters and a Western States qualifier, it is a classic, scenic ultra.

Take on the 47 mile MTC Windsor Ultra along the River Thames from Henley to Kingston. Enjoy riverside views, checkpoint support and a bespoke finisher medal while you tackle this scenic endurance challenge.