Taking place on Sunday 6 October 2013 and marking the end of Sandford Parks Lido’s summer season, the fourth annual event is back by popular demand and will see individuals and teams of three fitness enthusiasts from across Cheltenham and beyond compete to raise funds for the Sandford Lido Ltd and Cobalt Unit Appeal Fund.

Starting off with a two-kilometre swim in the Lido’s unheated, outdoor main pool – hence the recommendation by organisers to wear wetsuits – plucky participants will then lace up their trainers for a 10-kilometre round-trip run up to the Devil’s Chimney on Leckhampton Hill, and back down the steep slope to the lido.