Stephen Caley retained his Isle of Man Adventure Race title over a 25-mile (40km) course in sunny-hot conditions.
This year's race saw competitors self-navigating a number of specialist stages including mountain biking, kayaking and abseiling.
Caley finished the gruelling challenge in three hours 50 minutes and 27 seconds at Port Erith beach.
Colin Faulds finished two minutes 46 seconds back in second place, with Mark Watterson third.
The event, organised by Adventurous Experiences, saw competitors ride mountain bikes through Archallagan and South Barrule plantations before running the Raad ny Foillan coastal footpath to Bradda Head.
They also took part in kayaking across the Cringle Reservoir and abseiled down Milner's Tower.
The leading team of Kevin Whittaker and Adam Fretwell finished in three hours 56 minutes and five seconds, with 32 people in total completing the course.
Race organiser Keirron Tastagh said: "This journey is like no other event on the island."