Trail Running calendar near Welwyn 2025-2026

The High Lodge Half Marathon - Spring is a scenic trail running event held in Thetford Forest, known for its wildlife including fallow deer and wild thyme. This circular 13.1-mile course features a mix of hard-packed sand, grassy footpaths, and forest trails, suitable for both road runners and trail..

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

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 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 Zig Zag Challenge is a multi-terrain running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants run laps of a 5.3 km course featuring gravel footpaths and grass areas. The event offers a 6-hour or 4-hour timed format, allowing runners to complete..

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..

The Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. The race features a single-loop course through the scenic South Downs, offering a runnable and non-technical route ideal for both beginners and experienced ultra runners. Participants enjoy stunning views..

The Rose of the Shires Ultra Marathon is a 54-mile circular race through Northamptonshire's scenic countryside, starting and finishing at Brixworth Country Park. The course features approximately 70% trails and 30% roads, including footpaths, country trails, roads, and canal towpaths, with an elevat..

The Henley River Half Marathon, 10k & Junior Race takes place in Henley-on-Thames, UK, along the scenic banks of the River Thames. Scheduled for April 11, 2026, the event features a half marathon, 10k, and a junior race, all on mixed, undulating terrain with elevations of 98m for the half marathon a..

The Rosebud Marathon is a scenic 26.2-mile race held in Northamptonshire, England, featuring a mix of approximately 60% trails and 40% roads. Starting at Hartwell and finishing at Brixworth Country Park near Northampton, the course traverses beautiful countryside, including canal towpaths and 14 vil..

The Centurion South Downs Way 50® is a challenging 50-mile foot race held along the South Downs Way National Trail in England. The race starts in Worthing and finishes in Eastbourne, featuring an initial six miles of chalk footpaths and bridleways before joining the main trail at Chanctonbury Ring...

The 50 Mile Grand Slam 2026, organized by Centurion Running, is a series of four challenging 50-mile ultramarathons held across iconic UK trails. The event includes the South Downs Way 50, North Downs Way 50, Chiltern Wonderland 50, and Wendover Woods 50, taking place between April and November 2026..

The Haughley Festival of Running is an annual event held at the exclusive Haughley Park in Suffolk, offering a range of race distances including 5k, 10k, 15k, Half Marathon, Full Marathon, and Ultra Marathon. Now in its fourth year, the festival provides a scenic course mainly on pathways with some..

The Battle of the Brampton Valley Way is a unique ultra running event held along the traffic-free Brampton Valley Way, spanning 28 miles (45km) from Market Harborough in Leicestershire to Northamptonshire and back. This super flat course offers a scenic route through rural Northamptonshire, featurin..

The Windsor 50 Ultra Challenge, organized by Ultra Challenge, is a historic and scenic endurance event taking place on April 18, 2026. Participants can choose to walk, jog, or run along looped routes through Windsor and along the Thames Path, starting and finishing at Windsor Racecourse. The event o..

The Chiltern Ridge Classic 50K is an iconic ultra marathon held in the Chiltern Hills, England, featuring a challenging 51 km trail with 996m of elevation gain. The race starts at historic Berkhamsted Castle and finishes at Hampden Meadow in Wendover, traversing scenic ridgeline trails between Iving..

The Thames Ring 250 is an iconic 250+ mile ultramarathon loop starting from Goring, following the River Thames into London, then along the Grand Union Canal and back down the Oxford Canal to the finish. Established in 2009, it was the first race of its kind, known for its challenging course and high..

The Trident Grantham Triathlon, held at Grantham Meres Leisure Centre in Lincolnshire, is a classic sprint triathlon featuring a pool swim, scenic bike ride, and fast-paced run. Reviving a beloved local tradition, this well-organized event welcomes athletes of all levels, including first-timers. Set..

The Ale Trail is a 15-mile fun run held in Alfriston, East Sussex, starting from the beer garden of the Ye Olde Smugglers Inn. The course features two checkpoints at local pubs—the Hampden Arms and The Ram Inn—where runners can enjoy a beer token and snacks before continuing. Participants are encour..

The Other Run, organized by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds, coinciding with the London Marathon day. It offers multiple distance options: 5k, 10k, half marathon, and full marathon. The marathon follows the officially measured, scenic, and mildly undulat..