Ralph Johnston (36) took on the worldwide David Goggins 4x4x48 challenge on March 5, with the aim of running four miles every four hours, for 48 hours.
However, 48 miles was not quite enough and Ralph added extra distance to each run making his final total over 52.4 miles, the equivalent of two marathons.
Ralph is a volunteer crew member at Kinghorn lifeboat and has been on the team for two years. In his day job he is a pensions product manager.
Ralph said: “This was my first fundraising event for the RNLI, but I was delighted with the final total of £6,082.50 which far exceeded my initial target.
"I had set a personal target of £1,500 but ended up raising over £3,500 through a Justgiving page and my employer, Phoenix Group which is the UK’s largest long-term savings and retirement business, contributed £2,500.
“My first run began at 4:00am on Friday morning and I then ran at least four miles every four hours, finishing just before 1:00am on the Sunday morning. The early runs were okay but the challenge certainly got harder as I got closer to the end.
“I’m amazed with the final result and I’d like to thank everyone who contributed and supported me during the event. I’m now thinking about what my next challenge might be!’
The RNLI charity is supported entirely by donations. The Kinghorn RNLI station had a very busy 2020, responding to nearly 100 incidents.