"If you are taking part in the marathon, make sure you check which transport option suits you best."
For participants coming from the North Shore, there will be buses to the event from the Albany park and ride, the Constellation park and ride and from 488 Lake Rd, Takapuna.
If you're coming from the city there will be ferries running from 4.20am, leaving the Downtown Ferry Terminal.
After the race, Northern Express buses will leave every 15 minutes from Victoria Park, and ferries and trains will be operating.
There was also set to be some changes to bus stops and services along the route, including the Northern Express, CityLink and SkyBus. Bus stops would be reopened during the day as the course becomes clear.
Ireland warned bus usersshould expect some delays.
Participants from 49 countries including Australia, the UK, United States, Germany and China will be lining up at the start this year.
Almost 700 runners have signed up to run for charities including the Mental Health Foundation, Cancer Society, SPCA and Auckland City Mission.