Ashbridges Bay is a bay and park in Toronto, Ontario, Canada. It is located along Lake Shore Boulevard next to Woodbine Beach in the Beaches. The Martin Goodman Trail and boardwalk run through the park along the bay. The boardwalk runs 3 kilometres (1.9 mi) from Ashbridges Bay in the west to the R. C. Harris Water Treatment Plant in the east along Lake Ontario. It was once part of the marsh that lay east of Toronto Islands and Toronto Harbour.