Monster Triathlon

22 Jun 2025 (Sun)

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1000km, 50km, 5km

Monster Triathlon

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Join Monster Triathlon

The Monster Triathlon concludes with an ultra-marathon along the banks of the Thames. The run route will be signed and will take participants from Slough, into Windsor and along the Thames in London. It will follow the Thames path for most the way. There will be water stations every 10k on the run to allow participants to re-fill hydration packs and pick up any food and energy products needed.

As well as being an epic challenge, The Monster Triathlon also highlights the beauty and diversity of the UK.

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Monster Triathlon

local_activity Deals & discounts

verified_user Refundable Booking option

credit_card Secure payments

The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.