Calgary Halloween Events 2024 Dates. Calgary’s largest halloween event, screamfest, is back on oct. From ballet to costume contests, to accessible trick or treating, and even horror movie marathons, there is something for everyone this halloween in calgary.

From ballet to costume contests, to accessible trick or treating, and even horror movie marathons, there is something for everyone this halloween in calgary. 👉 skip the halloween stuff and go to fall in calgary.