If you're going to Toronto this weekend, expect some big crowds and long delays.
The Honda Indy begins today with a number of road closures already in place, including a significant portion of Lake Shore Boulevard West.
Local public transit will also be experiencing some significant delays throughout the weekend.
Racers will be speeding along the 2.8 kilometre track around Exhibition Place, reaching top speeds of more than 200 miles per hour.
The public is welcome to take in the practice runs today, while the big race is 3:40 p.m. on Sunday.