Around the Bay in a Day is a non-competitive fully supported recreational cycling fundraising event[1] organised by Bicycle Network in Victoria, Australia.

Cyclists register to ride a course which is 210 km (130 mi) either clockwise or anti-clockwise around Port Phillip Bay, starting and ending in Melbourne, though other distances, both shorter and longer, are available.

Cyclists register to ride a course which was originally 210 km (130 mi) (but later augmented with a 250 km (160 mi) option) either clockwise or anti-clockwise around Port Phillip Bay, starting and ending in Melbourne, and catching the Searoad Ferry between Queenscliff and Sorrento.

Less experienced riders could pick the Classic, which included the West Gate Bridge, or the Bay Ride.

[3] The event was first run in 1993, following on from the success the then Bicycle Victoria had experienced with its Great Victorian Bike Ride.