Paul McCleery completed the fourth and final 100-mile event in the gruelling series at the Autumn 100 in Goring & Streatley.
The race consisted of four 25-mile return legs in a cross shape, each leg passing back through Goring.
The runners had to endure humid 20-plus degree warmth by day with strong winds and torrential rain for over 12 hours.
See also: * Tireless Paul completes 100-mile race in personal best time* Hastings hopeful of another new signing* Hastings ace clocks fastest time at south east eventThere was again a high drop-out rate of 67 runners and just 166 finishers, with only 38 competitors left in the 100-mile grand slam.
McCleery had a tough race with cramp, blistering and hydration issues, but he managed to finish just 17 minutes within the cut-off in 27 hours and 38 minutes. He was in 166th place with just two runners behind.
The personal trainer finished the 100-mile grand slam in a healthy 23rd place overall with a total time of 100 hours and 55 minutes.
McCleery is also one of just five competing in the double grand slam (four 100-mile and four 50-mile races) and now has just one more 50-mile race to complete, on November 17. He is currently 10th out of 59 in that competition.