Trail Running calendar near Harwell 2025-2026

The Dark Rose is a captivating night trail run of about 5.5 miles from the Rose and Crown in Great Waltham, held as a self navigation challenge. Limited to 75 entrants, the event finishes with a warming post race meal.

The Pilgrim Challenge will take place in Farnham from Saturday 7 February 2026 to Sunday 8 February 2026. You can run 66 miles.

The Westonbirt Arboretum Winter Night Race is a unique running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes, which offer a beautiful and varied landscap..

Take on winter trails at Queen Elizabeth Country Park with 50 miles, 50 km or 20 miles on a scenic single loop through the South Downs and sections of the Staunton and Monarchs Ways. Expect rugged footing, big climbs, seven aid stations, li..

Run the scenic South Downs from Amberley with 6 km, 12 km or 22 km routes over forest paths, fire trails and rolling hills. On site registration, free parking and an event village by the railway make for a relaxed winter trail day, and dogs..

Run two scenic coastal half marathons in Portsmouth and Langstone Harbour over one weekend, enjoying harbour trails, seafront promenades and an optional ferry crossing. Complete both to claim the limited edition "Double Trouble" medal.

Drama Llama Run on the Thames towpath offers timed laps on a flat 5.3 km out and back course with a seven hour limit and a flexible start window. Pick 5 km to ultra and enjoy race support, same day results and a finisher medal.

Enjoy a winter run through Westonbirt Arboretum's stunning tree collections on solid underfoot trail style paths. Distances of 5 km and 10 km suit all paces. Tickets are sold out.

Join the Cold Norton Charity Winter Trail on 8 February for a scenic 10 km or half marathon across grassy country tracks to support Farleigh Hospice. Routes are narrative and unmarked so bring a map, your own cup or bottle and enjoy homemad..

Run a scenic 10 mile loop through North Milton Keynes parklands, riverside paths and woodland, featuring the quirky Cattle Creep tunnel under the Grand Union Canal. Dog friendly and chip timed with marshals and a finish medal for all finish..

Join the Irchy Park 5k canicross at Irchester Country Park on Sunday 8 February 2026 for a fun woodland run with your dog over grass, dirt and packed tracks. Trophies, medals and dog treats await all finishers.

Muddy Woody 2026: The Wye Valley Brewery Muddy Woody returns on 8 February at a new Aconbury Court Farm course. About 6 miles of forest and single track with runnable hills, chip timing and a free bespoke Muddy T shirt for finishers. Junio..

Take on the Wiltshire 10, a scenic 10 mile road race from Melksham to historic Lacock and back, with medals for all finishers and age category prizes. Entries capped at 300, book before 1 February 2026 as no entries on race day.

Run through ancient woodlands and farmland at One in the Woods Henley, with a half marathon, 10k and a 1k Little Sprinters at Culden Faw Estate. Enjoy chip timing, a finisher medal, on course water and a lively event village.

Tackle a crisp 10k winter trail through Essex countryside at Trifarm, with over 95 percent off road paths and bridleways. Enjoy a friendly small field, on site parking, and post run treats plus optional swim and sauna at the venue.

Take on the Purbeck Hill Challenge on 14 February 2026 from Knoll Beach, Studland, for a scenic but testing day across heathland and coastal dunes. Choose from four distances to 41 km with optional detailed orienteering and enter solo or as..

Celebrate Valentine's Day with riverside laps along the scenic Thames at Xcel SPORTS HUB. Choose 5k to ultra, run as many laps as you like within a one hour start window and 7 hour limit, and earn a bespoke finisher medal.

Run the traffic free Flitch Way on two 5.3 km marked loops, choosing distances from 5K to marathon or a timed 6 hour challenge. Pick a bespoke medal and enjoy lap aid station support at this cupless event so bring your own cup.

Take on the Hot Lips Run at Crystal Palace Park and choose how many 1.65 mile laps to tackle, from 5k to ultra, on scenic off road trails with rolling hills. Timed with a 7 hour limit and a finisher memento for all entrants.

Join Phoenix Running West Sussex for the Violets Are Blue Valentines Run at Southwater Park. Pick distances from 5 km to ultra, lap the flat compact trail at your own pace with rolling starts and claim a blue Love Spoon medal.