Trail Running calendar near Marlow 2025-2026

Join the Griffin Challenge at Braybrooke Taproom on 3 June 2026, a six hour looped event on the Griffin Trail where runners, walkers and hikers do as many laps as they like. Celebrate after with coffee, pastries and a cold beer.

Event overview The event takes place on Friday, 05 June 2026 as a 7 hour timed challenge. Participants may run any distance they choose within the time limit. The minimum distance to be an official finisher is 3 km. The normal lap length is..

The Sundowner Marathon is a unique running event held in Purleigh, Chelmsford, England, featuring a scenic course that passes along canals, over waterfalls, through vineyards, woodlands, and coastal saltmarshes. This marathon offers a disti..

Run through two lit railway tunnels beneath Bath on routes from short fun runs to ultra distances. Starts and finishes at family friendly Brickfields Park and each entry supports Sustrans, making it a memorable community day out.

The Valley of the Owls Run, organized by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds, Suffolk. The scenic course passes through the village of Ousden, known as the Valley of the Owls, featuring some of Engl..

Join Chase The Sun at Clapham Common on 10 June 2026 for a friendly 5K or 10K on a flat park circuit that passes the bandstand. Enjoy a themed medal, free photos and post race treats in a fun community atmosphere.

Take on the iconic South Downs Way 100, a 100 mile non stop trail race across chalk ridges from Winchester to Eastbourne on 13 June 2026. Expect rolling views, tough climbs and a 30 hour cutoff for seasoned ultrarunners.

Run the scenic Bewl Water trails around the reservoir in Lamberhurst, Kent, on off road woodland paths and quiet country lanes with lake views. Distances from 10 km to marathon and 50 km ultra make it ideal for every trail runner.

Run through rivers, bluebell woodlands and fields at the Nene Valley Trail Run on 13 June 2026 in Fotheringhay. Choose 10 or 20 mile routes, camp onsite and help support Kings Cliffe Active with every entry.

Run the South Downs Way 50 km on 13 June 2026, a scenic chalk ridge ultra with about 4,000 ft of climb across mostly trail. Four aid stations, a 9 hour cut off and a memorable finish at Queen Elizabeth Country Park await.

Run the scenic Cotswold Way from a Cirencester basecamp on 13 and 14 June 2026, choosing a full 100 km loop or shorter trail distances to suit every level. Expect rest stops, GPS tracking, medical and massage teams, plus camping and caterin..

Run through Hertfordshire countryside from 3 Brewers Brewery with 10 km and 5 km options over mostly off road trails, woodland and farm tracks. Finish with a medal, chip timing, a pint and live jazz for a festive post race vibe.

Take in sweeping views from Watership Down on scenic trails with marathon, half and 10K options. Enjoy chip timing, a finisher medal, goody bag and a keepsake beer glass while supporting Hampshire and Isle of Wight Air Ambulance.

Tackle scenic but hilly forest trails at the Wendover Woods Half Marathon and 10k on 14 June 2026, with a friendly junior run and on the day entries if available. Spectators can enjoy a cafe, forest walks and family activities.

YHA 14 mile trail run The event is scheduled for 14 June 2026 and covers 14 miles on trail. The race holds TRA permit 7715. The course begins with a climb and includes sections that can be slippery, with muddy puddles and chalk descents. Co..

Run the Robertsbridge Midsummer 10k or 5k on 19 June 2026 at Robertsbridge Rec Ground, a friendly community race over a scenic undulating multi terrain course. Finishers get bespoke medals and can refuel with a BBQ and post race bar.

The Centaur 100 Mile Ultra, hosted by Phoenix Running, is a unique 100-mile trail running event held at Denbies Wine Estate in Dorking, Surrey. Designed for both seasoned ultra runners and first-timers, the race features a flat-ish, single..

Run a scenic point to point trail through Buckinghamshire, Bedfordshire and Northamptonshire with a 50 mile ultra or a marathon, both finishing at Marlow Park, Grafham Water. Waymarked routes, aid stations and medals for all finishers.

Race to the King on 20 June 2026 invites runners to explore the South Downs and Monarch's Way at West Dean Gardens, with coastal and castle views. Distances from 30 to 100 km include full support, food stops and a hot finish meal.

The Phoenix Denbies Marathon & Half Marathon, held at Denbies Wine Estate in Dorking, Surrey, offers a unique off-road trail running experience on a flat-ish 1-mile loop with slight inclines. Scheduled for June 2026, the event features flex..