Trail Running calendar near Portsmouth 2025-2026

The Knacker Cracker is a challenging 10K trail race held annually at Box Hill, Surrey, starting from Denbies Vineyard near Dorking, UK. Known as "Britain's toughest 10k," the course features a demanding route with 473m of ascent and 335m of descent over rough, steep, and often slippery terrain. The..

Country to Capital Ultra is a 43-mile point-to-point race from the Shoulder of Mutton Pub in Wendover, Buckinghamshire, to The Stowe Centre near Little Venice in London. It opens the ultra season and draws a global field on a mixed course of countryside trails, roads, and a long canal towpath along..

The Fitstuff G3 Series No.1 is a trail running event held at Newlands Corner, Drove Road, Guildford, Surrey. Participants can choose between two distances: 10km and 15km. The event offers a scenic course starting from Newlands Corner, with parking available nearby.Runners can also opt for bundled en..

Dark Skies Surrey Hills is a night-time trail running event at Denbies Wine Estate in Dorking, set in the Surrey Hills. It offers a night-time 10-mile, 10K and 5K races, plus Canix events and 1K/2K kids’ races for 3–11 year-olds. The undulating, muddy courses wind through woodlands beneath the stars..

North Downs Way Ultra Run is a 30-mile guided trail from St Martha’s Hill, Guildford, Surrey, along and back along the North Downs Way, including the famous Box Hill. Organised by Running Adventures, the event is designed as an approachable introduction to ultra running, with the route cared for by..

The Hankley Common 10km is a guided trail run located at Hankley Common Lower Car Park in Elstead, Surrey. This scenic 10km route offers runners the chance to explore beautiful trails rich in wildlife and historical interest, including the Atlantic Wall replica used for D-Day training. The course fe..

The Dirty Devil Stampede is a challenging and muddy running event held at the Bovington Tank Range in Bovington Lane. Participants can choose from 5k, 10k, or 15k distances, with a special Dark 10k race taking place at dusk on a different course. The race takes place on an army training ground, offe..

Arundel & SDW Winter Trails 2026 is a double gold-rated trail event along the South Downs, finishing in Arundel. Runners choose between a marathon along the South Downs Way from Heyshott to Arundel (featuring river runs, rolling fields, and a Gurkha Suspension bridge) and a 15-mile option that detou..

Stonehenge Stomp, organized by the City of Salisbury Athletics & Running Club, is a non-competitive walking event held near Stonehenge in Wiltshire. The 36th edition is scheduled for Sunday 25 January 2026. Participants can tackle 10, 20, 30 or 40 km on fully marked trails (all routes offer Stonehen..

Set in Moors Valley Country Park & Forest near Ringwood, Dorset, the Moors Valley Wildwood Trail Series Half Marathon & 10K offers two woodland trail routes. Participants can choose the Half Marathon (two laps) or the 10K (one lap) across forest gravel paths. The event is fully marked with aid stati..

Organized by RunThrough UK, Windsor Trail Run takes place at Alexandra Gardens, Windsor, with a backdrop of Windsor Castle. Held on Sunday 25 January 2026, the event offers a flat, scenic trail course suitable for both 10K and Half Marathon distances. Runners enjoy well-marked trails, steady elevati..

Ashdown Forest 10 & 5 Mile Series: Race Two is the second in Nice Work's eco-friendly two-race series held at Pippingford Park Manor, Nutley, East Sussex. The event offers 10-mile and 5-mile trail races on hard-packed paths and forest trails through Ashdown Forest, featuring hilly sections and pictu..

The Longbridge 100 Backyard Ultra is a challenging last-person-standing endurance running event held at Church Farm, Litlington, near Alfriston. Participants run a 4.2-mile loop every hour, starting precisely on the hour, continuing until only one runner remains. The course features a mix of single..

The Fitstuff G3 Series No.2 is a running event held at Hound House Road, Surrey GU5 9JG. Participants can choose between 10km and 15km race distances. The start line and parking are conveniently located in a field off Hound House Road, marked with flags and signs for easy navigation.The event offers..

The Bedgebury Forest 10 and 5 Mile is a scenic trail running event held at Bedgebury National Pinetum and Forest in Kent. Featuring multi-terrain, undulating courses, the race offers 10-mile and 5-mile distances suitable for various fitness levels, along with a junior run for younger participants. R..

Devil's Punchbowl 10km is a guided trail run around the Punchbowl in Hindhead, Surrey. The 10km route follows scenic trails with several hills, run at a group pace rather than a race. It suits those new to trail running or who prefer running with others, especially at dusk or night.Top views are pau..

The Westonbirt Arboretum Winter Night Race is an exciting running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes, which showcase the arboretum's diverse landscapes and solid terrain, providing a unique blend of tra..

UK Ultra's Hibernal Hills 50 Mile is the season opener held at Queen Elizabeth Country Park, Hampshire. This ultramarathon covers about 50 miles on 99% trail, 1% road, with 6,400 feet of ascent and descent and undulating hills throughout. The route starts via the Staunton and Monarchs Ways, then cli..

Pilgrim Challenge is a two-day 66-mile or one-day 33-mile ultramarathon along the North Downs Way in Surrey. The start is at Sandy Farm Business Park in Farnham, and the route winds through countryside, villages and rolling downs with about 2,374 meters of ascent. The course is fully marked with sig..

The Portland Coastal Marathon is an ultra trail running event held at the Weymouth and Portland National Sailing Academy in Portland, UK. Scheduled for February 8, 2026, it offers a full marathon, half marathon, and 10k distances, catering to all abilities. The course follows the scenic Portland sec..