Pupils and staff at Cheltenham Prep braved the cold and occasional rain showers to raise money for WellChild, their chosen charity of the year.
Children in years 3 and 4 took part in an Aquathon, while older children in Years 5 - 8 and staff took part in a Triathlon in the school grounds on Wednesday afternoon.
With over 250 members of the school community swimming, peddling and running Cheltenham Prep are planning to raise hundreds of pounds for the Charity.
After finishing the course Rebecca Todd (11) said "It was tiring but exhilarating." and Tilly Parsley (10) commented "It was really cold after the swim! I think it is a good cause and we can raise lots of money and have fun."
WellChild provides essential and practical support to ensure that the increasing number of seriously ill children and young people in the UK have the best possible care.