Next Thursday 98FM's Brian Maher will be doing a 24 hour marathon to raise funds for Special Olympics.
This isn't the Big Ride Home presenter's first time to set himself a gruelling challenge in aid of a good cause.
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Previous challenges like 'Challenge 126' and the 'Big Swim' have raised tens of thousands of euro for Special Olympics.
Brian spoke to Rachael about why he likes pushing himself to the edge.
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Matt English is the CEO of Special Olympics Ireland.
He spoke to Rachael about what the organisation means to hundreds of athletes across Ireland:
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You can donate and find out more about the 24 hour marathon here.
