Forget London ? Tresco is the place to be for marathon runners on Sunday.

Some 123 competitors will be lining up at 9.30am for the 8th annual Tresco marathon in aid of the Cystic Fibrosis Trust.

Taking place on the same day as the Flora London Marathon, the 26-mile race covers seven-and-a-half laps of the island.

And despite the absence of celebrity visitors like Bill Bryson, Jenny Agutter, Blake Morrison and Charlie Dimmock, this year’s event is sure to produce its own stars.

Among them will be Olaus Mclean, a commercial pilot from Hayle who paddled from Sennen Cove to Bryher on Friday in just nine hours.

The 35-year-old father-of-two will run in the marathon before paddling the 28 miles back to the mainland in aid of the Cystic Fibrosis Trust and the RNLI.

The Tresco Marathon began in 2000 when Peter Hingston and then Island Hotel manager Philip Callan decided to raise money for cystic fibrosis, from which Peter’s daughter Jade suffers. Total funds raised to date are approaching half a million pounds.

Light rain is forecast for race day.