AROUND 400 runners are set to line up at the start of the Purbeck Marathon this morning.

The event, now in its third year, is due to get underway at The Downs, overlooking Swanage Pier, at 9.30am.

After taking in many Purbeck and Jurassic Coast beauty spots, the competitors will finish along the seafront back in Swanage.

The race was voted the UK’s best-rated marathon by the respected Runner’s World magazine in 2013.

Despite increasing maximum runners to 400, the event was full well before its closing entry deadline.

Race director Rose Clarke said: “The Purbeck Marathon has been very successful in its first two years and we are now in a position to start improving it, delivering more added value to runners and to the people of Purbeck.

“There will be more happening around the finish area on Sandpit Field and this will be great for spectators as well as runners.”

The 26.2 mile route takes in Durlston, Worth Matravers, Kingston, passing above Kimmeridge to deserted Tyneham Village, Creech, Corfe Castle and back to the finish along the seafront at Swanage.