Lucy Charles-Barclay (born 15 September 1993) is an English professional triathlete.
Prior to taking up triathlon, Charles was a swimmer.
She attempted to gain selection for the British swimming team for the 2012 Olympic trials in both the pool and open water.
She was, however, unsuccessful, despite having beaten open water trials winner Keri-anne Payne in the Great North Swim a month previously.
Charles subsequently made her debut in triathlon in 2014 and went on to win the 18-24 women’s age category at the 2015 Ironman World Championship as an amateur.
She subsequently turned professional.
During her first Ironman of 2018, the African Ironman Championship, she set a new personal best time of 8:56:10.
This beat her previous best from the 2017 Ironman Worlds, where she came in with a time of 8:59:48 and was a runner-up behind Daniela Ryf.