Triathlons in Bristol
20% off every 2027 race
Super Sprint £32 (was £40) · Sprint £36 (was £45) · Relay team £48 (was £60) · Junior Aquathlon £16 (was £20). The discount is already in the price, no code needed.
Racing with us? Add the 6-Month Triathlon Pass: unlimited swims and paddleboarding from 1 April to 30 September 2027, £200 instead of £250, so you can train on the course all spring.
Open-Water Triathlons in Bristol, on Our Own Lake
Sprint, Super Sprint, relay and junior aquathlon races on our private freshwater lake in Winterbourne, North Bristol. Five race days from May to September 2027, small fields of up to 100 athletes, and a lakeside café and bar right by the finish line.
Race Day, Done Properly
Beginner-friendly triathlons in Bristol
Open-water sprint and super sprint triathlons on our own private lake in Winterbourne, North Bristol. Fields capped at 100 athletes, chip timing, and a medal for every finisher, whether it’s your first race or you’re chasing a PB.
Open-water swim in a private lake
Clear, natural fresh water on our own site. No tides, no boats, just buoys, lifeguards and you.
Swim, bike and run from one Bristol venue
Registration, transition, the swim and the run all happen on our site. Park up, rack your bike and you’re steps from the start.
Free entry for spectators
No spectator tickets, no fees. Bring the whole crew to cheer you out of the water and over the line.
Lakeside café and bar
Hot food, coffee and a fully stocked bar open all day, so your supporters are looked after and there’s a cold one waiting at the finish.
Marshalled road bike route
The bike leg leaves the park for a fast loop on local roads around Bradley Stoke, with marshals and signposts at every turn.
Lifeguarded and marshalled from start to finish
Lifeguards on the swim, marshals in high-vis on the course and a first aid vehicle on standby. You race, we’ve got the rest.
New to triathlon? Start here
- 1Pick the Super Sprint. A 500m swim, 10km bike and 2.5km run: the perfect first triathlon. Ages 16 and over.
- 2Use the bike you’ve got. Road, hybrid or mountain bike are all fine, as long as it’s roadworthy and you wear a helmet.
- 3Swim your way. Breaststroke is absolutely fine, and lifeguards are on the water the whole time.
- 4No wetsuit? Hire one. Wetsuits, swim hats and tow floats can be added when you book. Check the live lake temperature at the top of this page.
- 5Know what happens on the day. Read the race-day steps below and the triathlon FAQs.
Already racing? Chase a PB
- Chip timed on our own timing system
- Sprint distance: 750m swim, 18km bike, 5km run
- Wave starts and fields capped at 100
- Five race days, May to September 2027
- Medals for every finisher, plus sponsor prizes at some races
2027 Triathlon & Aquathlon Race Calendar
see Events Calendar for all events and races.
may
june
july
august
september
Bring
- Wetsuit: mandatory if the water is below 15°C. Hire available
- Swim hat and tow float: see the rules opposite. Both available to hire
- Road or triathlon bike in roadworthy condition
- Helmet: mandatory, you cannot start without one
- Tri kit, or suitable cycling and running clothing
- Your waiver signed before you arrive, as you cannot compete without it
We Provide
- Race pack with timing chip, race number and ankle strap
- Marshals in high-vis at every turning point on the route
- Trained lifeguards on the swim and a first aid vehicle on standby
- Finisher medal
- Bike racking in the transition zone
- Lakeside café open all day for athletes and spectators
Race Formats
- Sprint: 750m swim, 18km bike, 5km run
- Super Sprint: 500m swim, 10km bike, 2.5km run
- Relay: Sprint distances shared by a team of 3
- Junior Aquathlon: 200m swim, 1.5km run, ages 9 to 15
- Triathlons and relays are 16 and over. Maximum 100 participants per event
- Memberships, passes and swim bundles are not valid for ticketed events
Race Day Rules
- Arrive on site at least 40 minutes before your swim start, and be at the lake entry point 20 minutes before
- In a wetsuit: wear either a tow float or a swim hat. Without a wetsuit: a tow float is required and the hat is optional
- Wetsuits are mandatory when the water is below 15°C and not permitted when the water is above 25°C
- Helmet on before you take your bike off the rack, and off only once you have racked it
- The bike leg is on open public roads. Traffic laws apply and unsafe riding means disqualification
- Sprint athletes must collect three wristbands on the run to finish
Swim, Cycle, Run | Tri your way
Four race formats, one lake. Whether it’s your first triathlon or you’re chasing a PB, there’s a race for you, all starting from our private lake in Winterbourne.
1. Sprint Triathlons – 750m Swim, 18km Bike, 5km Run
2. SuperSprint Triathlons – 500m Swim, 10km Bike, 2.5km Run
3. Junior Aquathlon – 200m Swim, 1.5km Run
4. Relay Triathlons – 750m Swim, 18km Bike, 5km Run (Team of 3)
4 Formats
SuperSprint, Sprint, Relay, Aquathlon
100 Max
Participants Per Event
Ages 16+
Triathlon min age
Free
Entry for supporters
Your Race Day, Step by Step
- Sign in – Arrive at reception and collect your race pack (timing tag, race number, timing tag strap, safety pins)
- Set up transition – Rack your bike and lay out your kit in the transition area
- Swim – 500m (SuperSprint) or 750m (Sprint) open-water lake swim
- Bike – 10km (SuperSprint) or 18km (Sprint) out of the park on a marshalled, signposted road loop around Bradley Stoke. See the routes: SuperSprint. Sprint.
- Run – 2.5km (SuperSprint) or 5km (Sprint) to the finish line
- Celebrate – Collect your finisher medal and soak up the finish line atmosphere. We always try to get massage therapists along on race day, and when they’re here, a short post-race massage is free for athletes
- Relax – Refuel at our lakeside café and bar with your supporters, who get in free
- Parking is free for 4 hours. Staying longer? Pop your reg in at reception and you’re sorted
Triathlon Information
Sprint and Super Sprint Race Event Information
Key information
You should arrive on site at least 40 minutes before your estimated swim start time (transition area opens at 7.00am). Please report to the lake entry point area at least 20 minutes before your start time.
A safety brief will be given to participants 10 minutes before the start of each race.
Triathlon Safety
The event may be cancelled due to extreme weather conditions including
- Lightning
- Severe winds
- Average water temperature under 11℃
If the water temperature is under 15℃ on the day of the event then wetsuits will be mandatory. We have wetsuits for hire if you do not have your own. Our hire wetsuits are generic, non-swimming specific.
The event organiser holds the right to cancel the event at any point due to weather.
Swimming
- You are required to wear a swim hat for the duration of the swim (Optional if you have a tow float)
- Tow floats are not required
- Wetsuits are required if water is below 15℃
- Wetsuits are prohibited if the water temperature is above 25℃
Cycling
- This is an open road event therefore traffic laws must be obeyed during the cycle section.
- The helmet is required to be worn before mounting the bike
- The helmet must stay on until the bike is dismounted
- The bike must be in a working safe condition
- There will be martials at each corner of the track
- A First Aid vehicle will be on standby for any incidents on the road
Spectators
Spectators are encouraged, particularly at the race start and finish areas. Please show respect and consideration to other road users and members of the public if spectating on the bike or run course. Spectators are asked not to stand on the road where there are no pavements. Spectators are also not allowed to enter the transition zone and must stand behind the fence.
We stress that only food and drink purchased from the West Country Water Park may be consumed onsite. Athletes may consume their race specific diet. Please make your team, family, friends etc aware to avoid potential embarrassment on the day.
Dogs
Trained assistance dogs only in the Park
Arrival, Car Park, Registration & Waiver
All competitors are asked to park in the main car park directly behind the building. All participants must report to and register with reception. Please have a waiver signed before you arrive, you will not be able to compete without a valid signed waiver. Link to waiver below. https://waiver2.roller.app/WestCountryWaterPark/home
You will be given a race pack upon registration which will contain your race number, timing chip and an orange ankle strap. Please put the chip onto the strap and place it on whichever ankle you feel more comfortable, please put your timing chip above any wetsuit or tri suit.
Transition Zone
The transition zone will be set up on the South East corner of the lake near to the road entrance. This is a short walk on concrete and grass so you may want to wear flip-flops or trainers that you leave at the entrance to the lake to collect at the end of the race. Please be at this point at least 20 minutes before your estimated start time.
Swim
The swim will take part in our lake. There will be two separate buoy circles for the different disciplines, this will be explained in the pre-event briefing. Wait to be invited into the water by the start marshal and keep clear from any swimmers already in the water. Please swim clockwise in the lake.
Bike
You must put on and secure your helmet before taking your bike from the rack. Only remove your helmet after you have docked your bike at the transition zone. Once ready, make your way with your bike out of transition, mounting and dismounting your bike at the end of the green mat.
The bike routes are below with Super Sprint (Left) and Sprint (Right).
Marshalls will be positioned on every turning point along the route and will be wearing high-vis.
The ride uses public roads, and you must follow the rules of the road, riding respectfully and safely in relation to other road users. The road surface is generally good but watch out for holes and uneven surfaces. As a rural area, key hazards are horses and farm vehicles. Competitors must follow the rules of the road at all times. Any cyclist who rides in an unsafe manner will be disqualified.
No litter must be left at any point of the course. Any competitor seen to be littering will be disqualified and the environment agency may be notified.
Run
Leaving transition you will be directed to the start of the running track by a marshall. The run is along a pathed running track. If you are participating in the sprint triathlon it is imperative that you count your laps, there will be a wristband station at the beginning of the track, every time you complete a lap you may grab a wristband. To finish the race sprint triathletes need to collect three wristbands
Equipment Hire
We do have wetsuits, swimcaps and towfloats for hire if you need.
Booking terms
You can book online on the day. You may be charged an additional fee if you book with our reception team.
If you can’t make your event and it is more than 72 hours away, you can change your booking yourself in the MyTickets section of our website (link below), free of charge (you pay any price difference). Between 24 and 72 hours before, we can change it for a £5 admin fee; within 24 hours, a change costs 50% of the booking (minimum £5). Refunds and gift cards: see our cancellation policy.
https://ecom.roller.app/westcountrywaterpark/activitiesfullcheckout/en/login
Alternatively, email us and we can change it for you (fees as above). If you are happy to pay for us to amend your booking, please note we need your booking ID and the exact date and time you’d like your new session booked.
Link for race results
We upload race results to our website as soon as we receive them, usually within a day of the race. If something doesn’t look right, email hello@westcountrywaterpark.co.uk with your race number.
After the race
All athletes and supporters are welcome to relax in our lakeside café after the race, with hot and cold drinks, snacks, toasties, breakfast rolls and a fully stocked bar. We always try to get massage therapists along on race day. When they’re here, a short post-race massage is free for athletes, on a first come, first served basis.
Other Activities You May Like
Aqua Park
Paddle Boarding
Triathlons
Triathlon FAQs
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The lake itself is wonderful for swimming and the Aqua park looks a lot of fun. There’s plenty for everyone to do including paddle boarding and of course the go-carts !
The staff are very attentive and will happily help with any of your needs.
I was happy to find a vegan sandwich in the restaurant which many places don’t have.
Will definitely be back for more.
All the children had an amazing time from start to finish. They went on the aqua park first which they all throughly enjoyed ,one child needed help but with a quick shout to the life guard they had help immediately. They were all given very clear instructions by the staff before going on, there is a lot of mixed ages together which I was a little worried about but once on they are all spread out and it was fine. They all then went on the go karts! Most of the children were a little worried to try but the staff were brilliant helped with anything they needed and answered any questions they had and put them at ease.
It was an absolutely brilliant day had by all. One thing I will say is maybe there needs better signage everywhere as if it is your first time coming you might get a little confused on where to go for things.
I will definitely be back again real soon
The staff have a great deal of patience and contribute to the fun; it’s a great team.
We loved our recent SI event and will be back for sure🙂