From the 401 take Allen Road north, which becomes Dufferin Street. Stay on Dufferin, north of Finch. The park is on your right hand side and enter the park at the set of lights for Supertest Rd.
When you enter the park, the road veers to the left and goes over a small creek. There is a parking lot on your left hand side. The west field is directly beside the parking lot (on the south side of the parking lot by the road) and the east field is just south of the pavillion.
Take the subway to Downsview station and take the 105 Dufferin North bus. Get off at Supertest Rd./park entrance and follow the parking directions.