This is a great spot. Beautiful views, great hiking/ biking, friendly staff. San dimas is a really nice city full of shopping, and eating. The papa's best sandwich shop is a great place to eat as well!
The staff that I spoke to was very helpful, and so friendly. She explained everything in the park, beautiful areas, and which sites had FHU. Very clean park, with great trails. Very reasonable pricing as well. Id go again if I had to stop on I40 in OK.