One of the elements of this Sunday’s gruelling TT Triathlon will be cycling three laps of the Mountain Course.
In addition, competitors in the main event will start with a 2.4-mile open water swim across Douglas Bay and finish with a marathon run over 26.2 miles.
In total, hardy triathletes will compete over a colossal 142 miles, a mammoth task which will push their bodies and fitness to the absolute limit.
Approximately 100 competitors and 11 relay teams will be competing in the combined events - split roughly 50-50 between the full distance race and the short course event involving a 1.2-mile swim, a 37.7-mile bike ride over a single lap of the TT Course and a seven mile run on Douglas promenade.
There is no doubt that this will be the toughest triathlon ever held in the Isle of Man.
Both events begin at 6am on Sunday with the swim in Douglas Bay, which will be parallel to the sea wall, giving spectators a great view as the competition unfolds.
The transition from swimming to bikes will take place at the War Memorial on Douglas seafront, while the second transition into the run will be at the TT Grandstand. Competitors, the bulk of them from the UK, will then return to the promenade where they will have the luxury of a flat run.
After competing over 142.6 miles or 45.9 miles, the all-important finish will be at the TT Grandstand.
l The inaugural Isle of Man TT Triathlon is sponsored by AXA Wealth International.
Billed as an endurance challenge like no other the Isle of Man has ever experienced before, the sponsors are already a corporate partner of the Isle of Man Swimming Association.
By supporting Sunday’s event, the company aims to help contribute towards the delivery of this first of a kind, well-anticipated triathlon organised by Sport Support (IoM) Limited - a charity formed to divert a percentage of their profits back into local sport.
To find out more about the TT Triathlon, visit www.tttri.com
Please note that the Mountain Road will be shut between Ramsey and Creg-ny-Baa on Sunday from 7.30am until 3pm.