Trail Running calendar near Olney 2026-2027

Experience a circular cross country route across beautiful undulating Hertfordshire countryside with distances of 18 or 26 miles starting from Baldock.

A chip-timed trail running event in Trent Country Park, Enfield, offering a 10 km senior race plus junior and kids races, with race photographs provided and specific safety and age rules for participants.

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.

Complete a full marathon distance over three days with a 5 mile run, an 8.1 mile trail race, and a half marathon. Enjoy a family friendly weekend at the Colworth Club with free camping and onsite facilities.

Trail event at Hyde Hall Farm offering distances from 5k to ultra marathon with lap options for heavy half and ultra. Aid station, baggage area and secure parking are provided and finishers receive a bespoke or lucky dip medal.

Trail half marathon and 10K around Carsington Water on 27 June 2026, with chip timing, kilometre markers, event photos and a bespoke medal.

Five scenic trail routes from 5km to 52km explore the forests and hills of the Surrey Hills and North Downs Way. The event features marked courses, outpost support, and a bring-your-own-cup policy. Runners receive timing, a finisher's medal..

Explore the Thames Valley trails at the Marlow Trail Run. Choose from a 5K, 10K, or Half Marathon on an all trail course. Every finisher receives a themed medal and free race photos.

TrailFest offers a day of trail running on the forest paths of Salcey Forest, with four distances from 10 km to 50 km. The cupless event has generous cut-off times and is accessible by car or public transport. All finishers receive a medal.

Looped races at Chasewater Country Park offer 5K laps for options from 5K up to a full marathon, a relatively flat mixed-surface course with park facilities and aid stations, and a finisher medal and occasional snack.

Run a multi-terrain 5km or 10km course starting from the 3 Brewers Brewery in Hatfield. Every finisher gets a medal, a drink, and a souvenir pint cup. The event takes place on 28 June 2026.

The Midsummer Munro is a half marathon held at Box Hill Fort in Surrey. The event takes place in late June. Runners can register online until the day of the race.

Enjoy a 5k fun run or walk through the trails of Therfield Heath to support the Teenage Cancer Trust. This family friendly event features a scenic two lap grass course for up to 700 participants.

The Aldbury 5 is a classic 5-mile cross country run through Ashridge Forest. This event has been a fixture for over 30 years. It finishes with prizes sponsored by the local Greyhound Inn.

Join a guided 10km trail run through the Devil's Punchbowl, a unique natural amphitheatre in Surrey. The group runs together on hilly trails, pausing for views. It's a social run, not a race.

Take on the Winster Hill Race in the heart of the Peak District with a 4 mile course and 177 m of climb that rewards effort with stunning views. Open to runners aged 14 and up with affordable pre entry and on the day entry available.

Run the full 82 mile Essex Way from Epping tube to Harwich lighthouse over challenging trails and country lanes. Enjoy supported checkpoints, GPS tracking and a 24 hour finish window for an epic route across Essex.

Experience a unique point to point half marathon along scenic canal towpaths from Wolverhampton to Birmingham. Run through the historic Coseley Tunnel and refuel at floating canal barge aid stations before finishing in Brindley Place.

Choose your own challenge at the Summer Sun Run, a flexible lap event set in the scenic Denbies Wine Estate. Complete as many 5.3 km laps as you like within 7 hours, with a large medal for all finishers. Enjoy a flexible start window and a..

The Fen Gallop features flat 10k and 4-mile multi-terrain races on country paths around Willingham. Both events start and finish at the recreation ground. A chipped timing system is used for all participants.