triathlon guide

Must Do Triathlon Events in 2025

With 2024 over and summer to look ahead to, it’s a great time to think about what challenges you might want to undertake this year!

A great way to keep up the motivation throughout winter and in pre-season training is to have an event to look forward to, and with the coming season looking more hopeful for triathlons, now is a great time to start looking for a challenge! We’ve picked out a range of events – both with HIGH5 on course and not.

Here are our top triathlons in the UK for 2025:

Outlaw Series – May to July 2025

With three fantastic events to choose from, it’s easy to see why Outlaw is the UK’s favourite long distance triathlon series. If you’re looking to take on a 70.3 or full distance triathlon in 2025… then look no further! From world class organisation, fully covered on-course support to great feed stations and a fantastic post-race meal. There are so many reasons to choose Outlaw next year but get in there fast as these events sell out quickly! On course HIGH5 will be with you all the way – you can find our products at feed stations on any Outlaw Triathlon.

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Craft Snowman  – 3 August 2025

Starting with an open water swim in a lake surrounded by mountains and finishing with a run leg straight up one of those mountains, The Snowman calls itself the toughest triathlon in the UK for good reason. If adventure and adrenalin is your cup of tea, then this spectacular triathlon in the heart of North Wales is for you. You’ll be supported on course with HIGH5 Energy Drink and Energy Gels at feed stations.

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Birmingham Triathlon  – 19 July 2025

This Triathlon will be held at the fabulous Commonwealth Games venue of Sutton Park. This beautiful rural setting with closed to traffic cycle course is a true test for competitors of all abilities, whether first time novice or experienced club and age group triathlete. The swim in Powell's Pool seen at the Commonwealth Games Triathlon 2022, is a perfect setting for the start of a memorable triathlon experience.

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Cardiff Triathlon  – 22 June 2025

Signing up for the Cardiff Triathlon is your ticket to compete in one of the UK's finest city triathlons. Not only should you expect a completely closed road route and coverage that is beamed across the world, but you should also expect a race that you want to share with everyone. With all distances from Super-Sprint to 70.3 with the Olympic Distance World Championship Qualifier there really is something for every ability at the Cardiff Triathlon. Tickets are in high demand so booking early is essential.

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Brighton & Hove Triathlon - 31 August 2025

The Brighton & Hove Triathlon is a long established highlight of the UK’s Triathlon calendar. Taking on the fast and flat traffic-free route from Hove Lawns along the famous seafront promenade and offering a range of distances to suit every level, this is a great event for everyone.

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If you’re taking part in any events this year, be sure to tag us on Instagram, Facebook and Twitter and show us how you use HIGH5 to fuel your race day! You can also check out our guides on race-day nutrition from Ironman to Sprint triathlon.

HIGH5 Cycle Pack

The HIGH5 Cycle Pack contains the nutrition essentials to support your next cycling training session or event with a combination of our most popular Energy, Hydration and Recovery products for cyclists. Get yours hereHIGH5 Cycle Pack

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