Tough enough to race the Monster Triathlon?
Open to the general public for the first time, participants will complete a 5km swim in Loch Ness, cycle 100 miles a day for five days, before finishing with a 50km run/walk from Windsor to Richmond on the final day.
The event was pioneered by charity Sabre Trust in 2016, where a team of both novice and experienced triathletes from corporate partner Tullow Oil completed the challenge in eight days.