Hundred Hills 50K

Before you make plans

Both start waves use the same nine-hour finish limit. Crews and pacers are not allowed on the route, even though the loops return to Stonor Park.

A loop is not a crew point

The course is two different 25 km loops from Stonor Park, with about 1,200 m of climb. You come back to the start in the middle of the race. That is useful for spectators. It is not a chance to collect a bag or a pacer.

The organiser does not allow crews or pacers at any point. Friends can watch from the park. They cannot hand you food, drink or kit. There are five aid stations on the route, and hot food at the finish is included.

The start is in two waves, at 08:45 and 09:00. Both keep the nine-hour finish limit. Only the first wave is eligible for the overall awards. Intermediate cutoffs are in the aid-station table, which is a separate page from the main event listing.

Start, parking and a finish bag

Registration, the start and the finish are all at Stonor Park, Henley-on-Thames, RG9 6HF. Parking is at the venue, so the organiser asks anyone with a car to leave spare kit in the vehicle.

If you arrive without a car, a finish-line bag can be left at registration. Label it with your name and bib number. The page describes those finish bags. It does not describe bags delivered to points on the course.

Kit that has to stay with you

The page describes the course as about 80% trail. The mandatory list includes a charged phone with the race numbers saved, capacity for at least one litre of fluid, a survival blanket, a waterproof jacket with sealed seams, a whistle, and a dry long-sleeved layer carried separately from the top you start in.

The organiser says a missing item can bring a one-hour penalty. Read the current kit notes before you pack. This summary is not a substitute for that list.

Entry, as published

The page says entries opened on 5 April 2026 at £80, or £82 if you are unaffiliated. It also says a waiting list runs once the places fill. It does not say whether 2027 entries are still open. Check the entry form on the day you decide.