Cedar River Dog Park Houser Way S & S 3rd St, Renton, WA98057 Cedar River Dog Park is Renton's first off-leash dog park. The park includes almost four acres with a separate area for…More large and small dogs. The city of Renton opened the park in conjunction with Renton's Unleashed Furry Friends (RUFF) which occasionally have scheduled meetings for imput and plans regarding the dog park. Located next to the Cedar River Trail, site of the old NARCO brick plant. If you have trouble finding it, you can just walk over from the Renton Community Center or ask them for help.