All 15 of the runners competing in this year's Brathay 10 in 10 have successfully reached the half-way point in the challenge. As it stands, Rik Vercoe leads the field, having completed five marathons in an average of 3:28:45, with Phil Eccleston following closely behind (3:30:20).
Described by renowned adventurer Bear Grylls as 'an epic challenge that will require an epic strength of mind', the event consists of 10 successive marathons in 10 days around England's largest lake. The final stage takes place on the same day as the full Brathay Windermere Marathon on Sunday (19 May).
Second-placed Phil Eccleston, a member of Burnden Road Runners, has overcome serious injury over the past year to compete in the event. Following a herniated disc in his spine, he was told by doctors that it wouldn't be possible for him to run a marathon within 2-3 years.
Phil, who struggled with a time of 4:08 on day 3, has returned to form with two impressive performances to keep him within grasp of an overall sub 3:30: "It's going to be a very emotional experience. Running means everything to me and at one point last year I thought that I may not be able to run again. So to be here, on the verge of completing what runners recognise as THE most difficult endurance challenge, is nothing short of a miracle."
Another runner well placed to complete this year's challenge is 39-year-old David 'Foxy' Bayley from Milton Keynes. Unbelievably, if Foxy completes the final circuit of Windermere, on Sunday, it will be his fifth successive Brathay 10in10, breaking the current record of four, set by Steve Edwards in 2010.
You can keep up to date with the progress of the runners by visiting the Brathay 10 in 10 website.