Monster Triathlon
Edition history
Windsor, Windsor and Maidenhead, United Kingdom
22-28 Jun, 2025 (Sun - Sat)
Cycling
1000 km
Running
50 km
Swimming
5 km
Triathlon
5 km
1000 km
50 km
About the event
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.
Races offered by this event
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Monster Triathlon official pages
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