Trail Running calendar near Marlow 2026-2027

A 50 km trail ultra in the Chilterns starting and finishing at Stonor Park on 20 March 2027. The marked course has 4000 ft of climb, five aid stations, full medical support and a nine hour cut off.

A looped trail event from Bath Racecourse with 50 km, 29 km and 10 km route options through Bath and nearby countryside, staffed rest stops, GPS tracking, medical support, and a finisher medal and T shirt.

Trail races on the South Downs Way on 20 March 2027 with 50 mile, 50 km and marathon options, marked courses, aid stations and coach transport between finish and start.

A trail event at Stansted Park, Hampshire offering 21.4 km, 16.1 km and 10.0 km routes through woodland and open countryside, with chip timing, on-course drinks and a metal finisher medal.

Five days of timed running on certified River Thames routes in Walton on Thames, with flexible lap choices from 5 km to ultra distances, daily time limits, aid station, multi-day Lantern medals and finisher t-shirts.

Trail event in Hurn Forest offering distances from 5K up to ultra marathon on a 5.3 km out and back lap. Aid and drinks are available at lap start and finish and 20% of entry fees go to Forestry England.

A spring half marathon through way marked forest trails around Speech House Hotel with timed chip bibs, three water stations and medical cover; organised by the Rotary Club with proceeds to charity and selected for national trail championsh..

A two-lap, multi terrain 10 km trail race around Mortimer village that starts and finishes on Mortimer Fairground. The route runs through local woodlands and includes a separate canicross start plus chip timing and downloadable photos.

A single-loop 50 km trail race from Arundel through the South Downs with woodland and riverside sections, four aid stations, chip timing, live GPS tracking and UTMB Index recognition worth 2 ITRA points.

A 42 km trail marathon from Stanmer Park across the South Downs that joins the Brighton Marathon finish on Hove Lawns. Entry includes chip timing, a finisher medal, stocked outposts and a GPX route file.

Riverside mixed terrain half marathon, 10K and junior race on 10 April 2027 at Remenham Farm in Henley on Thames. Marked kilometres, lap formats vary by distance, and entries include a themed medal and chip timing.

A 54 mile circular ultra and a 26.2 mile marathon section based at Brixworth Country Park, combining trails, roads and canal towpath with waymarking, checkpoint support and real time GeoTracks tracking.

A 50 mile trail race along the South Downs Way from Worthing to Eastbourne, featuring about 5700 ft of climb, seven aid stations, mandatory kit checks and a 13 hour limit. The course finishes with a lap of the athletics track.

Centurion Running's 50 Mile Grand Slam 2027 bundles four separate 50 Mile events across 2027, from April to November. Entries open 26 April 2026 and the standard entry fee is £480.

A county versus county running challenge along the Brampton Valley Way, with runners starting from Market Harborough or Northampton. The 28 mile out and back course features two long tunnels, four feed stations, and field wide county scorin..

A scenic trail half marathon in Seaford on 19 April 2026 that links the seafront with the South Downs and features undulating terrain and climbs. Surplus funds support local charities and entrants receive a medal, water stations and finish..

Ultra X Spring Trail Series 2027 offers five trail races from 12km to 110km around Cowdrey Estate in the South Downs National Park. Routes pass greensand hills, river, woodland and lowland heath.

A city-centre trail event offering a 55 km ultra and a 25 km trail run through riverside paths, woodland and parts of the old Bristol and Bath Railway. Public parking is nearby and public transport is recommended.

Guided 18 miles trail run across the Malvern Hills on Saturday 17 April 2027, visiting ridge summits with over 1300 m of ascent. Led by an experienced guide at a social group pace, with an alcohol free beer possible afterwards.

A *50K* trail ultra on the Ridgeway National Trail from Berkhamsted Castle to Hampden Meadow, crossing Ashridge, Ivinghoe Beacon, Coombe Hill and Whiteleaf Hill. Fully marked course with three staffed checkpoints and mandatory route navigat..