Drivers are being warned to find other ways to get in and out of the downtown core due to a charity bike race that will close two of Toronto's busiest routes.

The Gardiner Expressway and the Don Valley Parkway will be closed to traffic for most of Sunday to make room for the Becel Heart and Stroke Ride for Heart.

The Gardiner will be closed from Carlaw Avenue to the Humber Bridge, while the DVP will be closed from Highway 401 to the Gardiner from 2 a.m. to 2 p.m. on Sunday.

The City of Toronto suggests drivers take Lake Shore Boulevard instead of the Gardiner, and Bayview Avenue, Leslie Street or Don Mills Road as an alternate to the DVP.

The closures come only weeks after the GoodLife Fitness Toronto Marathon shut Yonge Street and several other downtown arteries.

Some drivers expressed frustration on Friday, telling CTV Toronto that major road closures cause major headaches.

During his election campaign, Mayor Rob Ford suggested moving some events off roads and into parks – a consideration that garnered 65 per cent approval in a Forum Research survey this week.

On Friday, Coun. Doug Ford, the mayor's brother, said moving smaller events to parks is something council will consider next year, but big events like the Becel Heart and Stroke Ride for Heart would have to remain on streets.

Some 13,000 people are set to take part in Sunday's race, which is expected to raise about $4 million for heart and stroke research.

Also on Sunday, Maya's March will take over Conlins Road from Ellesmere Road to Military Trail. The road will be closed from 8 a.m. to 4 p.m.

The walk benefits Sick Kids Hospital and Primary Ciliary Dyskinesia research.

The seventh annual East End Kids of Steel Triathlon bike race will close the westbound lanes of Kingston Road from Danforth Avenue to Birchmount Road Saturday, June 4 from 8 a.m. to 2 p.m.

With a report from CTV Toronto's Naomi Parness