A snapshot of live traffic flows across Auckland shows the main road that connects Devonport and Takapuna packed and slow moving from the Takapuna intersection.
Traffic is also slow around the city's downtown waterfront, where public fan zones are located at the cup village, and along Fanshawe St to the Northern Motorway onramps.
Several waterfront roads are now closed until 11pm, including Jellicoe and Madden Sts, and sections of Beaumont St.
For those not out on the water, the best spots for catching today's Prada Cup racing are on either side of the water, on Okahu Bay Wharf along Tamaki Dr, atop Bastion Pt or North Head.
Auckland Transport today reminded those heading to the first day of racing to give themselves plenty of time travelling to the waterfront and consider catching public transport.
Those using an e-scooter or bike would be able to enjoy free valet parking at a dedicated spot near the waterfront
Auckland Transport also said it was important to scan QR codes with the Covid Tracer app on public transport and entering the America's Cup Village.
Ferry sailings will either be disrupted or suspended during racing.
The Gulf Harbour sailings will be replaced by buses between 2pm and 5.30pm while many other ferries including the Devonport, Waiheke Island, Pine Harbour and Half Moon Bay ferries will operate on changed timetables.
Other ferries passengers are being warned the trips may take longer and subject to delays.
HOW TO WATCH AND STREAM
The Herald will have live updates on nzherald.co.nz/sport while you can listen to live commentary on Gold AM and iHeartRadio.
America's Cup coverage is free-to-air on TVNZ. You can also stream the action live or on-demand on TVNZ.co.nz or on the America's Cup YouTube channel.
If you're in Auckland, you can also head down to the America's Cup Race Village at the Viaduct Marina, where there will be a stage and big screens to watch the action. The village operates from 10am to 8pm on race days and can be accessed through the main entrance at the beginning of Hobson Wharf.