BRAND NEW CHILDREN'S EVENT FOR 2026 - it may be our first children's event at Hillingdon Cycle Circuit, but "it's not our first rodeo" of organising children's multisport events!! We've been organising children's duathlons and triathlons for the past 10 years at various venues including Dinton Pastures, Tywford and Eton Dorney Lake.

We're super excited to bring this new venue to our event calendar and have witnessed first hand just how much fun can be had at this venue. We're also very excited that this event is part of the Triathlon England South Central Junior Series.

This venue is great for competitors and spectators alike with a tarmac cycle and run course and banked grass verges for spectators. All races are run–bike–run duathlons with distances set by age category. Races use a traffic-free circuit and are timed using chip timing. Ages are based on age as of 31 December 2026, not the event date.

Distances are aligned with British Triathlon Rules for Duathlon (page 38). Exact distances will vary slightly. 

Suitable for all abilities of duathlete - even if it is their first one, everyone has to have a first event somewhere and we would love it if you choose for it to be with Barnes Fitness.

Barnes Fitness Event Standards:

• Inclusive atmosphere
• Chip timing with results available instantly
• Fun, friendly and knowledgeable marshals
• Well sign posted course
• Metal medal to commemorate your achievement
• Event Awards for podium and age group winners
• On-site first aid and safeguarding team
• Free event photos available to download after the event
• Free fruit available on finish line

Equipment & safety notes

• Any roadworthy bike (fully working brakes, pumped up tyres and safe wheels) is acceptable — including mountain bikes or hybrids.
• Helmets are compulsory.
• No specialist clothing is required (shorts and t-shirt are fine). Elastic laces and race belts are helpful for quicker transitions.
• No parental assistance is allowed in transitions (except youngest groups at marshal’s discretion).
• Lap counting will be the responsibility of participants (helpers can assist).

This event will run under a British Triathlon permit and follow all relevant safeguarding and race safety rules. A Triathlon England Technical Official will be on site.