A New South Wales man who has survived a heart attack is walking 75 kilometres, raising money for St Vincent's hospital. 

More than $17,500 has been raised as a team of people walk from Vaucluse to Wollongong. 

Gary called Luke Grant on Australia Overnight to tell how he began the 16 and a half hour trek just before two o'clock this morning, for charity. 

A New South Wales man who has survived a heart attack is walking 75 kilometres, raising money for St Vincent's hospital.&nbsp;
More than $17,500 has been raised as a team of people walk from Vaucluse to Wollongong.&nbsp;
Gary called Luke Grant on Australia Overnight to tell how he began the 16 and a half hour trek just before two o'clock this morning, for charity.&nbsp;

Australia Overnight is broadcast from 12am-6am on Saturday and Sunday on 2GB, 3AW and 4BC, and 12am-3am on 6PR.

Australia Overnight is broadcast from 12am-6am on Saturday and Sunday on 2GB, 3AW and 4BC, and 12am-3am on 6PR.

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