Money raised goes to Children's Centre
Entries are now OPEN for this year's Granite Mann - the Island's only off-road triathlon.
It takes place at Cringle in the South of the island with the swim taking place in the reservoir over a 400m course.
Athletes then move onto a 10k bike ride around the plantation.
And finish with a 5km run.
Due to popularity of last 3 years a duathlon is also included in the event.
Herbertson firing on all cylinders at this year's TT
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