Surrey Slog

Ewhurst, United Kingdom • 20 Jul 2025

The Surrey Slog, also known as the Holmbury Hill Challenge, is a challenging trail running event held in the scenic Surrey Hills near Peaslake. The race features a hilly, undulating multi-loop cross-country course primarily on tracks around Holmbury Hill, with well-marked routes and marshalled key points. Participants can choose between a half marathon or a 10-mile option. The event offers six drink stations along the route and at the finish, where all finishers receive a bespoke commemorative medal. Hosted at the Duke of Kent School, the race is praised for its friendly atmosphere, stunning views, and excellent organization, making it a popular choice for trail runners. Visit the organization's website for the most recent information.

Race information

13 mi
Half Marathon
10 mi
10 Mile Option
Visit the organization's website for the most recent information.
Trail runs nearby

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..

Epic Epping Forest Ultra 2025, run by Orion Harriers, was planned as a 50-mile forest ultra in Epping Forest, north-east London, starting from Jubilee Retreat in Chingford. The course comprised ten 5-mile laps on woodland trails with about 1,120 meters of elevation gain, marked with sawdust and flag..

The Fortitude Ultra - Denbies is an endurance running event held at the picturesque Denbies Wine Estate in Dorking, Surrey. Participants face the challenge of completing 10 laps of varying distances (approximately 3, 4, or 5 miles) within a 10-hour timeframe. Runners can adjust their chosen distance..

The Dark Downs 50k is an exciting night running event held on the scenic South Downs, featuring both a 50k race and a Half Marathon. Participants will experience the unique atmosphere of running at dusk and into the night, with the rolling hills and runnable trails providing an ideal setting. The ev..

UTMB Index

North Downs Way Ultra Run is a 30-mile trail event starting and finishing at St Martha’s Hill, Guildford, Surrey. The route follows the North Downs Way westbound, showcasing the Surrey Hills with highlights such as Box Hill and a pass through Denbies Wine Estate before finishing at Newland’s Corner..

Eridge Park 10 Trail Challenge, staged at Eridge Green in Tunbridge Wells, Kent, marks its 25th anniversary in 2025. The 10-mile off-road trail race is renowned as a favourite among trail runners, offering stunning scenery, steep, narrow climbs and plenty of mud along a traffic-free route through Er..