The 2016 Dartmoor Discovery (DD) ultramarathon starts from Princetown on June 4.

The DD, a 32-mile race organised by leading South West running club the Teignbridge Trotters, is the UK’s longest single-lap road race. This year, a record number of 250 places were sold within days of becoming available and competition for the event’s coveted trophies will be hard-fought on the demanding hills of Dartmoor.

The pressure will be on the Mud Crew Trail Runners, as they strive to retain the men’s and ladies’ team trophies that they won in 2015.

Starting and finishing at Princetown in the heart of Dartmoor, the DD attracts some of the country’s top ultra distance runners, as well as hardy enthusiasts of all ages. It combines stunning views with several tough hills and notoriously unpredictable weather, resulting in a true test of body and soul.

As the runners battle across Dartmoor, a huge logistical operation ensures all aspects of the event proceeds smoothly. An estimated 150 people, including members of the Dartmoor Radio Club.

Further down the field, runners strive to beat three cut-off points that they must pass within certain times to qualify as official race finishers.

The cut-off points are placed at 13 miles (2 hours, 46 minutes), 20 miles (4 hours) and 26.2 miles, or marathon (5 hours, 15 minutes).