List of disc golf courses in Ontario  , there are 73 known disc golf courses in Ontario on the official PDGA Course Directory. 43 of them (43/0.73 round 0%) are full-size courses with 18 holes or more, and 28 of them (28/0.73 round 0%) are smaller courses that feature at least 9 holes. Ontario has 73/*1000000 round 1 courses per million inhabitants, compared to the Canadian average of 276/*1000000 round 1. List of disc golf courses in Canada