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Organised by the Rotary Club of Mosgiel and the Taieri Community Facilities Trust, the fundraiser starts at 6am at Dunedin Airport.
Trust chairwoman Irene Mosley said children between 12 and 18 could take part in the event for free with an adult who had bought a ticket.
Children under 5 could also take part for free as long as they were in a backpack or buggy with an adult.
A two-for-one ticket deal is available on the website, by using the code ''ROTARY'' at the checkout.
''The airport is really behind it,'' Mrs Mosley said.
Tickets are also available from Edinburgh Realty in Mosgiel.