Trail Running calendar near Welwyn 2025-2026

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..

Centurion Running’s Hundred Hills 50km is a scenic trail ultramarathon through the Chiltern countryside, starting and finishing at Stonor Park near Henley-on-Thames. The race covers two 25km loops for a total of 50km, with about 4000 ft (1200 m) of elevation gain and a 9-hour cut-off. The route is 8..

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..

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..

Winter's End - 50 Mile Ultra & Marathon is a scenic trail running event held along the South Downs Way National Trail, starting near Arundel, West Sussex, and finishing in Winchester, Hampshire. The event features a 50-mile ultramarathon and two marathon options covering either the first or second h..

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 Petzl Night Trails 10K at Salcey Forest is a unique night trail running event held near Northampton. Participants run a fully marked, two-lap 10K course on crushed stone paths through the flat but occasionally slippery forest terrain. Runners must use a head or chest torch to navigate the dark t..

Elephant Challenge takes place at Salcey Forest, a Forestry England site near Northampton (NN7 2HX). This 6-hour, multi-lap event centers on a 3.5-mile off-road loop through the forest, allowing participants to choose distance—from 3 laps for a half marathon to 7 for a marathon or many more within 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..

Hankley Common 10km is a guided trail run by Running Adventures, starting and finishing at Hankley Common Lower Car Park, Elstead, Surrey. The 10km route crosses Hankley Common, known for wildlife and views. The session is social and non-competitive, ideal for those new to trail running or who enjoy..

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 Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. This single-loop course offers a runnable, non-technical route through the scenic South Downs, making it ideal for beginners and experienced runners alike. Participants enjoy stunning views of rolling hil..

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..

The Testway Ultra is a challenging ultra marathon held in Hampshire, England, featuring 40 and 50-mile distances along the scenic Testway footpath. The route stretches from the chalky downs near the Northern Hampshire/Berkshire border to the southern town of Totton in Southampton, showcasing picture..

Mortimer 10km is an annual running event held on Easter Monday, 6 April 2026, at Mortimer Fairground in Mortimer, Berkshire. The long-standing village 10km offers a largely off-road course that weaves along paths and bridleways through nearby woodlands, starting and finishing at the Fairground. In a..