This year's Scotiabank Toronto Waterfront Marathon is getting a bit of a makeover, and it's going to cause even more problems for city drivers.

There has been a route change for the October marathon this year, sending them into new neighbourhoods. Thousands of runners will detour through the University of Toronto campus and go through the Church/Wellesley, Bloor/Yorkville, Chinatown and Kensington Park areas. That is in addition to areas runners already go through, St. Lawrence Market, Swansea and the Beach.

The reason for the change is to make it one of the best, most scenic marathons around, according to organizers. It's also better to motivate runners and great for out-of-town racers, who get to see a bit more of the city over the new route.

That's great for marathon runners and organizers, but the new route changes may end up causing serious gridlock throughout the city.

This year, organizers are expecting 6000 runners for the marathon and 12,000 for the half, with participants from over 50 countries.