Chain Reaction Cycles

Mourne Triathlon

Mourne Triathlon



Mourne Sprint Distance Triathlon  is set to take place on Saturday 25th August 2018

Race Start: 10am(TBC)

Enter via Triathlon Ireland :

Individual Sprint distance Entry
Relay Entry
Swim in the clear waters of Castlewellan lake, bike on closed roads with superb views of the Mournes, and finish with a run around the lake in the stunning setting of Castlewellan Forest Park.
Both individual and relay team entries are available, so there’s never been a better time to take up the challenge!
Information about this year’s course can be found below.
Entries will open at 9am on 1st March 2018.


Swim Course

The swim course an anti-clockwise circuit of 750 metres in the clear waters of Castlewellan lake. Competitors will enter the water at the slipway and make their way to the deep water floating start line. Once finished the exit is again at the slipway where you begin the short run to transition.


Transition is located in the carpark adjacent to the courtyard where registration takes place.


Bike Course

The bike course is an out and back 20Km cycle from Castlewellan towards Katebridge. The course is a scenic route with a mixture of hills and fast sections to keep everyone happy!

Run Course

Competitors run around the lake in a clockwise direction, to finish in the castle courtyard. Water stations will be provided.


Registration and race briefing will be sent out a week before the race.
Information also available on the Olympian Triathlon Club Facebook page.
See you in August!
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