Trail Running calendar near Sunbury-on-Thames 2025-2026

We have found 358 Trailruns within 80 miles of Sunbury-on-Thames. See below where and when you can find the races.

Join a guided 13 mile trail run around Guildford's Surrey Hills, visiting St Martha's Hill, Shere and the North Downs Way. Enjoy a friendly group pace, kit support and optional post run refreshments.

Run 26.3 miles over five laps around the scenic Colworth Estate near Sharnbrook on 30 Nov 2025. Open to solo runners and teams, this intimate trail and road loop has drink stations but is cup free so bring a bottle.

Join the Marton Mile on Sunday 30 November 2025 for a relaxed one mile walk jog or run along the flat traffic free Lias Line Greenway near Marton. This family and dog friendly community fundraiser supports Shelter and welcomes all paces wit..

December 2025

Event overview Winter on the Downs is a pair of single-loop trail ultras around the trails of East and West Sussex. Both races start and finish in Helen Garden, Eastbourne. Distances offered: 55 miles 100 miles The route begins over Beach..

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Take on the Salisbury Plain Winter Edition on 6 December for a scenic, fully marked trail challenge over Half or Marathon distances. Enjoy well stocked aid stations, marshals and finisher medals as you tackle crisp winter terrain.

Run beneath the stars through Cowdray parkland and past the ruins at this atmospheric night trail, with 5km and 10km options and dog friendly canicross races. Head torches are mandatory and hot drinks await back at the Walled Garden.

Scenic trail runs from Plumpton Racecourse across the South Downs with ridge top views to the sea. Choose 9, 12 or 22 km with chip timing, water stations and a finishers medal; plastic free event so bring a reusable cup.

The Mince Pie 10 is a festive 10-mile race held in Peacehaven, East Sussex, organized by Seaford Striders. The multi-terrain course features about six miles of farm tracks and bridleways, with the remaining four miles on quiet roads, includ..

The Trifarm Winter 10k is the finale of a four race trail series, sending runners along more than 95% off road footpaths and bridleways on a scenic winter route. With on site parking and just 50 places, this compact 10k fills fast.

Join the New Forest Xmas Trails on 7 December at Holmesly Campsite for fully marked off road laps through heathland and woodland, with distances from 15K to a 50K ultra. Enjoy a festive trail vibe and the option to plant a tree instead of t..

Run a scenic 10 mile trail around Grafham Water, weaving through woodland, Dragonfly Pond and Sanctuary Bay before a final mile along the dam wall. Canicross runs in a separate wave so you can bring your dog on a lead.

Enjoy a scenic 10 km trail loop around Rye Harbour Nature Reserve at Winchelsea Beach, racing with a friendly small field and marshalled course. Stay for tea and cake and chase prizes for first male and female finishers.

Join Freedom Racing on 7 December 2025 for a scenic 50k through the Surrey Hills, fully signed with live timing and generous aid stations on the out and back route. There is a 10 hour time limit and a free TRIBE bar at registration.

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Test your limits on the Winter Downs 200, a continuous 200 mile trail loop through southern England from Dec 10 to 14 2025. Expect big climbs, rugged trails and a 96 hour cutoff for a bold end of year challenge.

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The Salcey Forest Christmas 10K, 5K & Junior Fun Run is a festive trail running event held in Salcey Forest, Northamptonshire. Set amidst beautiful, tree-lined woodland paths, the race offers a virtually flat, mixed-terrain course that can..

Mince Pi Run - races of 2 decimal places is a 14 December 2025 off-road event at Shalford Park, Guildford. Participants choose from 3.14 to 31.4 miles (1–10 laps) on a scenic, mostly flat course with one or two hills. A Pi marathon option a..

Night street orienteering in Colchester on 17 December from the Berechurch Arms. Choose a 3.4 km short or 5.4 km long course, use MapRun or printed maps and hunt controls by torchlight for a fun, technical evening.

Join the 20th Christmas Pudding Dash in Pett near Hastings for festive, family friendly cross country races across farmland and woods. Multiple distances, medals, prizes and mince pies make this muddy, fun run a great seasonal tradition.

The Christmas Canter is a festive running event held at the Suffolk Running Centre in Bury St Edmunds, UK. Offering multiple distance options—5k, 10k, half marathon, full marathon, and ultra marathon—runners can choose their preferred chall..

Join a festive 12 km trail in Chelmsford for a fun, social run with a brewery checkpoint en route. Entry includes a Santa hat, drink tokens, a Christmas medal and post run pints or upgrade to rum at the finish.