The Big Brenig Swim
Info: Entries for this event open on Friday 30th October 2026 at 01:00.
| 500m (Juniors 12-15) | £45.00 | |
| £47.00 | (from 31/10/2026) | |
| 500m | £50.00 | |
| £52.50 | (from 31/10/2026) | |
| 1.5km (Juniors 12-15) | £58.00 | |
| 1km | £68.00 | |
| £71.00 | (from 31/10/2026) | |
| 2.5km | £79.00 | |
| £82.00 | (from 31/10/2026) | |
| 5km | £90.00 | |
| £94.00 | (from 31/10/2026) |
One of the Love SwimRun 'BIG Swim Collection'!
Enter all 3 BIG Swims and get 15% off all 3 entries:
The Big Bala Swim - The Big Welsh Swim - The Big Brenig Swim
The BIG Brenig Swim
Join us for the HIGHEST open water swimming event in the UK and the only swimming event held in Llyn Brenig - a stunning reservoir set high up on the beautiful Mynydd Hiraethog. Llyn Brenig is the 4th largest lake in Wales & is home to rare ospray, pine martins, sand pipers & red squirrels!
The Big Bala Swim Event Schedule:
Please ensure you read the full event information on the event website before entering:
https://loveswimrun.co.uk/the-big-brenig-swim/
The BIG Brenig Swim will take place in Llyn Brenig, nr Cerrigydrudion, North Wales. The main 2.5km open water swim is two full widths of the lake, starting beside the visitor center. For those that want a bigger challenge we also have a 5kmswim that will see participants swimming two laps of the 2.5km course. We also have two shorter swim options of 500mand 1km that are also open to children of 6 years upwards (must be accompanied on the swim by a fee paying adult).
Wetsuit and non-wetsuit places are available! (If the water temperature is below 14 degrees on the day of the event then wetsuits will be mandatory for all swimmers)
Junior entires (age 12-15) are available in the 500m and 1km swims.
location: Llyn Brenig, Nr Cerrigydrudion, Conwy County, Wales, LL21 9TT
Registration: Llyn Brenig Visitor Center
Swim Distances:
- 500m
- 1km
- 2.5km
- 5km
The swim course is linear, marked by a line of inflatable buoys, with swimmers swimming in both directions during the event.
The 5km distance takes in two full laps of the course (4 x widths of the lake).
The 4.5km is one lap of the course (2 x widths of the lake).
The 1km and 500m involve swimming out towards the middle of the lake and around an inflatable marker buoy before returning to the finish line.
Cut off time: There is a cut off time of 3.5 hours for all distances.
Entries
Entry numbers are strictly limited to 300!
Age restrictions: You must be over 16 years of age on the day of the race to enter the 2.5km or 5km event.
Junior entries: Children aged 12 and above can complete the 500m or 1km swim if accompanied in the water by a fee paying adult who must swim with them and take complete responsibility for them. Each adult may only accompany 1 child. Wetsuits and tow floats are compulsory for junior participants.
Wetsuit and non-wetsuit entries are available. Non-wetsuit swimmers must wear a swimming tow float.
Entry fee includes:
- Full water safety cover
- Event swim hat
- Electronic timing
- Snacks at event finish
- Slate medal
- Event photography
- Trophy for winners in each distance category
Event Rules & Entry Terms & Conditions
Please read the Event Rules and Participant Declaration which can be found below, and terms and conditions of entry thoroughly before signing up. You can read them in full here.
Please be aware that we offer a no refunds and no deferral policy. Please see Terms and Condition clauses 5 and 6 regarding optional Refund Protect insurance and the options you have for transferring your entry. Please only enter this event if you are happy with these terms.
View the Event Disclaimer / Terms and Conditions.
View the Event Cancellation / Refund Policy.
This event offers the option to purchase XCover, so that participants may be able to get a refund if they are unable to attend due to unforeseen circumstances.
Other events in this series - A discount of up to £13.50 per entry is available if you enter 3 or more new events in this series now
| Sat 5 Jun 27 | The Big Bala Swim |
| Sat 3 Jul 27 | The Big Welsh Swim |
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