Pam , it's interesting you went to Chino Hills, as I went to The Chino Airport out and back via Ontario Airport. I call it the plane loop. I did go through the City of Chino Hills as well, but didn't get close to the state park. It was a gorgeous day.
Hill Slug, Don't blame you for turning around. I almost did so yesterday when I rounded a couple of Corners in Lytle Creek Canyon and get hit with a 30+ gust.