A 50km ultra and half marathon in the heart of the Chiltern Hills.
Update (23rd Sept): Due to a request from the National Trust, we have now changed the 50km route. Please click here to read further.
Please read and download our PDF race information document.
COVID: This event will be going ahead with COVID secure restrictions in place. For more details please click here.
Both races will operate a rolling start. The ultra between 0815-0900, the half between 0945-1030.
To view race resources including maps and GPX files, click here.