Centurion Hundred Hills 50km

Stonor, United Kingdom • 14 Mar 2026

The Centurion Hundred Hills 50km is a scenic trail ultra marathon held in the Chiltern countryside, starting and finishing at the historic 850-year-old Stonor Park near Henley-On-Thames, England. The race features two distinct 25km loops, covering 50 kilometers with approximately 4,000 feet of elevation gain. It offers a challenging yet beautiful course through ancient woodlands and picturesque villages, with 80% trail and 20% road terrain.

The event includes five well-stocked aid stations, full medical support, and a marked route. With a 9-hour cut-off, it suits first-time ultra runners and those aiming for a fast early-season race. Spectators can enjoy food and drink vendors at the start/finish area. Visit the organization's website for the most recent information.

Race information

50 km
1219 m+
Visit the organization's website for the most recent information.
Trail runs nearby

The Centurion North Downs Way 50 is a 50-mile ultramarathon along the North Downs Way National Trail, from Farnham in Surrey to Knockholt Pound near Greater London. The race features a challenging course with 5,600 feet of elevation gain, predominantly on trail (80%) with some road sections. It is p..

The Compton Marathon & 16 Mile Challenge, organized by the Compton Harriers Running Club, is a popular running event held in Compton, Berkshire. Participants can choose between a full marathon and a 16-mile challenge, both set against scenic backdrops. The event promotes community engagement and enc..

The Goring Gap Trail Weekender, held near Mapledurham outside Reading, offers a variety of running and walking events over a scenic weekend in May. The event features a 50-mile ultra-marathon, a 52K ultra designed for beginners with minimal climbing and full route support, and a relaxed half maratho..

The Richmond Park Marathon is a scenic 26.2-mile running event held in Richmond Park, featuring a challenging course that consists of three laps. The first lap is 12 miles, encompassing a route around the park's perimeter and through its center, while the subsequent two laps follow the Tamsin trail,..

The Chiltern Valley 10km is a scenic trail run held in the picturesque Hambleden Valley near Henley on Thames, starting and finishing at the Chiltern Valley Winery & Brewery. The multi-terrain course covers 10 kilometers, featuring woodland, trails, single-track footpaths, and country lanes with an..

The Ridge Off Roader is a challenging mixed terrain race held in the picturesque Chiltern Hills, now celebrating its 12th year. Participants can choose between a 10k route and a half marathon, both of which are well-marked and marshaled. The event also features a 1k race for local children.As a char..