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The Big Welsh Swim 2022

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Saturday 9th July 2022

Entries Open
Tuesday 1st June 2021
Entries Close
Friday 24th June 2022
Mid Way: 1.3km; One Way: 3km; Two Way: 6km; Three Way: 9km
Entries so Far
433 Participants
Waiting List Entries
47 Participants
Entry Fees

Mid way: Junior (age 15 & under): £33
Mid way: £52.50
One way: £59
Two Way: £64.50 (no train ride included)
Three way: £76

Event Organiser - Chloe Rafferty


The 3km swim is NOW FULL -  If you enter it you will be added to a very long waiting list! Please do not email us asking about the possibility of getting a place - it is very unlikely! 

We have a no refunds and no deferral policy. Please only enter this event once you have fully read our terms and conditions and are happy to agree to them.
Please take out the optional of REFUND PROTECTION if you want to be able to apply for a refund if you cannot attend the event. 

All aboard the swim train!

Catch the narrow gauge train to the end of Llyn Padarn to start your swim for a truly unique experience! With the spectacular backdrop of the Snowdon mountain range, the historic Dolbadarn Castle and Welsh slate quarries you can choose to swim the length of the lake, either once, twice or three times! We have a mid length option too!

We are sponsored by

The BIG Welsh Swim will take place in Llyn Padarn, Padarn Country Park, Llanberis, Snowdonia National Park, North Wales. The swim route will involve lengths of the lake (each length is 3km) with a choice of 4 different distances to choose from. Wetsuit and non-wetsuit places are available! The lake is surrounded by some of Snowdonia’s most stunning scenery including beautiful woodland, a historic castle, the old slate quarries that tower above the valley and the small narrow gauge railway that we’ll use to transport you to the end of the lake!

location: Gilfach Ddu station, Llyn Padarn Railway, Llanberis, North Wales. LL55 4TY.

·   Mid way: 1.3km
·   One way: 3km FULL
·   Two Way: 6km (you will not take the train on the 2 way swim)
·   Three way: 9km

Aid stations: 3 stations over each length of the lake: both ends and half way point.

Cut off time: 4.5 hours from start time for each distance. The race organisers and appointed staff can retire a participant at any time if they judge them not capable of finishing due to fatigue or poor physical condition.

Entry fee includes: 
-   Full water safety cover
-   Train ticket (excluding 2 way entries)
-   Event swim hat
-   Event timing
-   Fuel and hydration during event
-   Race souvenir
-   Event Photography
-   Prize for winners in each category (no age specific categories) – supplied by Zone3

You must be over 18 years of age on the day of the race to enter the event. 16+ participants will need parental consent to take part in full length swims. Under 16’s can complete the Mid way swim if accompanied in the water by a fee paying adult who will take complete responsibility for them.

Please see the website for full details about the event including info about non-wetsuit entries.

There will be a maximum number of entries available for each distance. When that number is reached entries for that distance will close. 


Administered by Refund Protect

This event offers the option to purchase upgraded refundable terms, so that participants may be able to get a refund if they are unable to attend due to unforeseen circumstances.

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