One of the city's biggest marathons will result in traffic chaos downtown on Sunday.

The Goodlife Fitness Toronto Marathon and half-marathon are set to begin at 7:30 a.m. starting at Mel Lastman Square. A five-kilometre run is taking place along the waterfront, with the start and finish lines at Exhibition Place.

Major roads including Yonge Street, Bayview Avenue, Spadina Avenue, King Street and Lake Shore Boulevard will be closed in the morning for the annual Marathon.

A full list of road closures can be found here

TTC diversions can be found here.