Trail Running calendar near Sudbury 2025-2026

Thursley Common 10km is an evening trail run hosted by Running Adventures in Thursley, Surrey. The 10km route weaves through the Thursley National Nature Reserve, a 325-hectare expanse of heathland, peat bogs, pine and deciduous woodlands, and habitats for dragonflies and a variety of birds. This is..

G3 no.3 is a running event in Guildford, Surrey, hosted by the G3 Series. The start line and event car park are at Newlands Corner, Drove Road. Runners can choose between 10km and 15km distances, with entry fees of £27 and £31 respectively (plus service charges).Bundles offer discounts for multiple..

Stody Estate Trail Run offers exclusive access to the private Stody Estate near Holt, North Norfolk, inviting runners to trade roads for woodland and open-field trails with a couple of challenging inclines. The event features three distances—4k, 8k, and 12k—through the estate and surrounding country..

High Lodge Half Marathon – Spring is a circular trail race set in Thetford Forest, offering a friendly atmosphere for both seasoned trail runners and newcomers. The multi-terrain course loops through hard-packed trails, forest paths, sandy sections, and grassy footpaths, with wildlife such as fallow..

The event is scheduled for 1 March 2026 at Brixworth Country Park, Northampton Road, Brixworth NN6 9DG. It comprises fully marked and marshaled trail races over two distances: 10k Half Marathon Both routes use trails and tracks around Pitsford Water. Races leave Brixworth Country Park, cross the..

Silent Pool 10km is a guided trail run that starts and finishes at Silent Pool, Albury, near Guildford. The route follows North Downs Way sections and the Netley Heath forest, dipping into Shere and passing film locations from The Holiday and Bridget Jones Diary. It’s ideal for those new to trail ru..

The Leith Hill Half Marathon is a challenging cross-country race that takes participants from Dorking to the summit of Leith Hill, the highest point in south-eastern England, and back. Spanning 13.1 miles with an elevation gain of 1,800 feet, this event is celebrated for its stunning scenery and sup..

The event takes place on 8 March 2026 at Wellingborough Grammarians Memorial Sports Field, Sywell Road, Wellingborough NN8 6BS. It is organised by LDWA - Beds, Bucks and Northants and uses walking routes through Northamptonshire countryside. The event does not allow dogs. On-site parking is availab..

Humanity Direct Amersham Ultra is a one-day endurance event based at Dr Challoner’s Grammar School in Amersham, Buckinghamshire, set in the Chiltern Hills. Runners and walkers can choose from three distances: 50km ultra, 25km half ultra, or a 10km option. The route winds through the Misbourne and Ch..

The Hundred Hills 50km takes place on 14 March 2026 at Stonor Park, Stonor, Henley-On-Thames (RG9 6HF). The event is a trail ultramarathon run as two different 25 km loops, starting and finishing at Stonor Park. Minimum age to enter is 20. Entry fee is £78 for affiliated runners (£80 for unaffiliat..

Sevenoaks Circular Challenge, organised by LDWA Kent, is held from West Heath School in Sevenoaks. This 49th edition features three brand-new routes of 15, 20 and 30 miles, exploring sections of the North Downs and the Greensand Ridge with some of the best views in West Kent. The event includes indo..

Surrey Hills Half Marathon is a guided trail half marathon starting and finishing in Guildford, Surrey. The 13-mile route threads through the Surrey Hills’ scenery, including St Martha’s Church and hill, the village of Shere, and Newlands Corner and Hackhurst Downs, with sections of the North Downs..

The Gratitude 25km is an exciting running event taking place in Broxbourne, UK. This race is designed for runners of all levels, promoting fitness and community spirit. Participants will enjoy a scenic route while challenging themselves to complete the 25km distance. The event emphasizes the importa..

The ZigZag 2026 Moo-rathon, Calf and Hen K at the Farm is a trail running event held at Hyde Hall Farm, SG9 0RU. Returning for its third year, the event offers multiple distance options including 10k, half marathon, full marathon, and ultra marathon. The course features a mix of tarmac paths, grassl..

The Windsor Trail Run takes place on Sunday 22nd March 2026 at Alexandra Gardens, Alma Road, Windsor SL4 3HU. The event offers trail running on a flat course with views that include Windsor Castle. The route maps cover a Half Marathon and a 10K. Listed elevations are 29 m for the 10K and 58 m for t..

The Elephant Challenge is a six-hour off-road event organised by Big Bear Events on 24/03/2026. Participants complete as many laps of a 3.5-mile loop as they wish within the six-hour time limit. A marathon distance requires seven laps plus a short out-and-back; a half marathon requires three laps p..

Petzl Night Trails 10K at Salcey Forest takes place on Tuesday, 24 March 2026. The event is a trail 10k, run as a two-lap, marked course. A head or chest torch is required to take part. Petzl will attend with demo head torches. Canicross entries are included; canicross runners start 10 minutes befo..

The Run the Wild Half Marathon is a guided trail event based in the Chiltern Hills, starting from The Home Office in Tring. The route covers around 13 miles (about 21 km) with approximately 300 m of ascent. The course runs over undulating chalk hills and through local woods. Runners are led by loca..

The Zig Zag Challenge is a timed running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants can choose between a 6-hour or 4-hour challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass areas. The event..

Saturn's 7 Hour Time Challenge at Wraysbury Skiff & Punting Club (Wraysbury, TW20) is an inclusive, self-paced race along the River Thames. Entrants choose a distance from a 3 km lap, with full laps around about 7 km (4.37 miles) or a shorter 3.28 mile option depending on conditions. You can run as..