2018 sees the DD celebrate its 20th anniversary, for one year only the course will revert back to its original distance of 34 miles.
Entries will open in October - date to be confirmed.
The Dartmoor Discovery, or DD as it's affectionately known, is the UK's longest single lap road ultra marathon.
It has gained somewhat of a cult status on the running circuit and is one of those races that runners have to have on their CV.
The race starts and finishes in Princetown. The 32-mile course takes you up and down some of the toughest hills that Dartmoor has to offer. There are 10 feeding stations on route, nine of which you can leave your own personal drinks at. A bespoke quality DD medal awaits anyone crossing the finish line in under the 6 1/2 hour cut off time.
The DD weekend finishes with the legendary DD disco on the Saturday night.