Ontario Motor Speedway Park sits on Center Avenue in Ontario, built on land that was once home to the iconic Ontario Motor Speedway before it shut down in the 1980s. The park is now a joint-use facility that blends park amenities with school grounds, creating an interesting mix of open space and community infrastructure. It’s conveniently positioned near Cucamonga-Guasti Regional Park, so if you’re already in the area exploring trails, this is an easy addition to your route.

The park itself has designated walking paths and open spaces where dogs can move around comfortably. The trails are well-maintained and wind through natural areas, giving you a sense of being away from the immediate urban surroundings while still staying accessible. The setting is fairly quiet and straightforward—nothing fancy, but that’s part of its appeal. You get a genuine neighborhood park experience rather than something overly developed.

Since it’s a joint-use facility, there are school grounds on the property, so timing matters. You’ll have more space and a better experience visiting outside of school hours and during weekends. The open layout means your dog has room to stretch out, and the paths give you options for either a quick walk or something with a bit more distance depending on what you’re in the mood for.

The proximity to Cucamonga-Guasti Regional Park makes this area worth exploring more thoroughly if you have the time. You could easily spend an afternoon moving between the two spaces and getting a fuller sense of what the region offers for outdoor time with your dog. The location in Ontario puts you in the eastern San Bernardino County foothills area, so you’re well-positioned if you’re traveling through or based in that part of Southern California and looking for accessible dog-friendly spots.