The Aran Islands half-marathon takes place on Inis Mór this weekend.
The Aer Arann sponsored event takes place from tomorrow until Sunday.
The funds raised will go to the Mater Hospital Foundation to prevent Sudden Arrhythmic Death Syndromes.
Also known as SADS, it affects one person under 35 each week in Ireland.
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The money raised will go towards genetic testing equipment to diagnose hidden heart conditions.
