Silverbacktrails - Oswiu's Revenge
Osmotherley, United Kingdom • 17 May 2026
Event overview
SilverBack Trails is staging the Oswiu’s Revenge half marathon on Sunday 17 May 2026 near Osmotherley. The route is approximately 13.2 miles and starts and finishes at Square Corner, nr Osmotherley. Entries are limited to 50 participants, the entry fee is £20.00, and all entrants must be at least 18 years old. Entries are handled through the SiEntries system and there are no on-the-day entries. Entry opening and closing dates are published for the event.
Course, support and requirements
The route runs around the Black Hambleton and Silton Woods area, using forest tracks and ancient trods with views over the North Yorkshire Moors and the Vale of York. The course includes technical ascents and descents. Navigation aids will include some flags and marshals, a master map provided at registration, and a GPX file sent to participants before the event. There is one checkpoint on the course and provisions at the finish; the checkpoint will offer water, cola and sweets, and finish provisions include options suitable for vegetarians and vegans. Each finisher receives a bespoke medal and a certificate. There is a 3.5 hour time limit. Ample parking is available at the start/finish; a £1 per car charge will be collected on the day for donation to the National Park.
Mandatory kit minimums include a waterproof jacket with taped seams unless Paramo, hat and gloves, a spare thermal top or jacket, an emergency bivvy bag, 500 ml of fluid, at least 60 g of food, a fully charged mobile phone with What3words and OS Locate or OS Maps, a working compass, and an OL26 OS Map or Harvey’s Map of the North Yorkshire Moors. Dogs are permitted if kept on a short lead due to likely sheep grazing. Visit the organization's website for the most recent information.