#race
Monster Triathlon
Jun 22, 2025
Organizers
M
monstertriathlonAt a glance
Running
Ultramarathon, Medium Swim (2-5km), Long Cycle (100-200km), Medium Swim (2-5km)
The Monster Triathlon ends with an ultra-marathon along the riverside of the Thames. The run will be clearly marked and goes from Slough to Windsor and then along the Thames in London, mostly on the Thames Path. Every 10k of the run, there will be water stations allowing competitors to replenish their hydration packs and get necessary food and energy.The Monster Triathlon is not only an incredible challenge, but also serves to highlight the gorgeousness and variety of the United Kingdom.
Registration types
Running
50 km Running
Running
5 km Swimming, 1000 km Cycling, 50 km Running
Running
1000 km Cycling
Running
5 km Swimming
