Greater Toronto and Hamilton Area drivers might have noticed some extra company on the roads today. That's because Monday is Bike to Work Day, an annual celebration of cycling in Toronto.

In Toronto, cyclists met at Yonge and Bloor streets at 7 a.m. before starting a ride down to Nathan Phillips Square for a pancake breakfast.

In a message posted on Twitter, organizers with Cycle Toronto estimated that 2,500 riders took part in events across the GTHA.

Bike to Work Day gets the 25th annual Bike Month rolling with an assortment of rides, races, workshops and events to celebrate cycling. Several cities across the GTHA will be holding Bike Month events, including Toronto, Newmarket, Brampton, Vaughan and Hamilton.

First staged in 1989, Bike Month will run until June 26. A complete list of events is available on the Bike Month website.