750m Swim, 20km Bike, 5km Run

The event starts with a refreshing 750m swim in the glorious Blue Lagoon followed by a 20km bike and 5km run on the quiet roads and in the stunning countryside of what is locally called Mid Yorkshire! This event is so popular we host it twice a year at either end of the season so you can test yourself to beat your time! Entries are limited so don't delay in booking your place!


The Blue Lagoon, Northfield Lane, Womersley, DN6 9BB
750m Swim - 20km Bike - 5km Run 
Entry Fee:
(£6 day licence fee applies for non British Triathlon Members)  
Start Times:
Full timings TBC
Minimum Age:
15 years old by 31st of December

Please note proof of age/ID will be requested at registration.

Wetsuit Policy:

British Triathlon Wetsuit Rules Apply 


Lake Temp


Last Update 04/07/2020

Minimum Temp for Swimming is 11ºC*

*In the spring we wait until the water is holding at least 14ºC overnight to ensure it remains above the minimum temperature for swimming. 

Wetsuits are mandatory when the water temperature is below 18ºc. Above 18ºc wetsuits are optional but non wetsuit swimmers must used an approved Tow Float. The Blue Lagooners Management reserve the right to request to test the suitability of a swimmers wetsuit or tow float for buoyancy & suitability for swimming and reserve the right to refuse access to the water if a swimmers wetsuit or tow float is deemed unsuitable and/or unsafe for swimming. Please check out our info videos on our open water swimming page that explain why this is so important. 

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