Jarek 🚲
The dog off-leash area is the dog park area and several paths, including vast majority of Spring Road north of Centre Road. There's maps posted at some spots but I don't remember where exactly (either end of Spring Road, maybe?) and I don't think I have a picture.

But except for the main Dog Hill, I would dispute that these areas are "where the primary usage of the area is for dog-owners to exercise their pets unrestrained" as specified for leisure=dog_park (specifically the "primary" part), so we might want another tag for that?