ALL 225 places for this year's Dartmoor Discovery ultra marathon have already been filled by runners.

The event, on June 1, is a 32-mile race organised by south west running club the Teignbridge Trotters.

Roger Biggs and Gina Little, of the renowned 100 Marathon Club, will be handing out trophies in Princetown on the day.

The DD, a 32-mile race, is the UK's longest single-lap road race.

When Roger Biggs and Gina Little join their fellow runners on the starting line in Princetown, they will have clocked up more than 1,200 marathons between them. The pair know what they are taking on. Roger has run the DD on two previous occasions. Gina has run it once.

Roger said: 'The Dartmoor Discovery is a truly awesome race -awesome just about sums up everyone who completes this demanding course.'

Gina Little added: 'I'm looking forward to running the Dartmoor Discovery a second time. I really enjoyed my first DD and I'm hoping to do as well as I did last time. It's not an easy event and everyone who finishes will have completed a genuine challenge.'

Race director Roger Hayes, who is chairman of the Teignbridge Trotters, said: 'I'm thrilled to welcome Roger and Gina to Princetown as part of the 2013 DD team. They command immense respect in the distance running world.

'It is particularly fitting that winners will be receiving their trophies from these two running legends, who will have just completed the race themselves, running alongside DD veterans and newcomers alike.'

As the runners battle across Dartmoor, a huge logistical operation ensures all aspects of the event proceeds smoothly. An estimated 120 people, including members of the Dartmoor Radio Club and St John Ambulance, help out on the day in a variety of roles, from marshalling and timekeeping to staffing water stations and providing catering.

Last year's race was won by Bideford AC's John Ward, who smashed the previous course record by more than two-and-a-half minutes, finishing in a stunning time of 3 hours 33 minutes 36 seconds. In the ladies Truro RC and Mud Crew Trail runner Isobel Wykes crossed the line in 4.07.32.