Now Queenstown's Harald Ulriksen is two weeks away from running 1000km in the United Kingdom.
Mr Ulriksen sets off for a solo journey from Inverness to Brighton on November 20 and plans to complete the challenge unsupported within 14 days.
That means he will run an average of 70km per day.
His efforts are for three child cancer charities - Children with Cancer UK, Clic Sargent and World Child Cancer.
"The intention is to generate local and national publicity to raise awareness and create opportunities for fundraising to help the children."
The charitable cause is one close to Mr Ulriksen's heart. In April, it will be five years since his wife Bronwyn died from cancer.
He said running was a great release for him and a good way to deal with some of the grief.
In 2008, Mr Ulriksen walked 2400km from Adelaide to Brisbane, raising more than $20,000 for the McGrath foundation, a fund set up by former Australian cricket fast bowler Glen McGrath after his wife died of cancer.
• Mr Ulriksen is still seeking sponsorship and donations for the cause. For details, visit www.uk.virginmoney giving.com/runa2b
