Eight players – who are regulars at The Bluestone Inn, Immingham – took part in The Longest Day charity match in aid of Macmillan Cancer Support.
While the British Open at St Andrew's was suspended due to weather conditions, the Immingham golfers battled through high winds and torrential rain to complete the 72-holes.
They started at Immingham Golf Club at 4am before completing rounds at Grimsby Golf Club, Laceby Manor and another round at the Immingham club.
They clocked up more than 300 shots each and walked a staggering 18 miles.