Windsor Half Marathon 2026 Entry, Date & Race Info

The Windsor Half Marathon is one of the UK’s best-known autumn half marathons, combining a scenic road route with the historic setting of Windsor Great Park. Starting and finishing close to Windsor Castle, the race attracts runners from across the country looking for a memorable destination event with strong crowd support and an impressive royal backdrop.

The course takes runners through tree-lined roads and open parkland within the estate, offering a largely traffic-free experience with rolling terrain and several long gradual climbs. While not considered a flat PB course, the event is widely regarded for its atmosphere, organisation, and picturesque surroundings. The combination of autumn scenery and the iconic Windsor setting makes it particularly popular with charity runners, club athletes, and first-time half marathon participants.

The Windsor Half Marathon has built a reputation as a major fixture in the UK running calendar and regularly attracts large fields each year. Alongside the main half marathon, the wider event weekend often includes additional family and junior races, helping create a festival-style atmosphere around the town and park.