Description:
Chino Hills State Park is a vast expanse of open space adjacent to the huge population centers of northern Orange County and the Inland Empire. Hit it on the right day and the grass-carpeted rolling hills and the great views of the San Bernardino Mountains make for a sublime biking experience.

Most of the riding at Chino Hills tends toward the intermediate level, with rolling fire roads predominating.
That said, the sheer size of the park, along with the few fun sections of single-track that it offers, can make for a great workout even for advanced riders.

Please be aware that Chino Hills is situated in the smog belt. Riding is best in the winter and early spring. Summer temperatures are often torrid, adding to the discomfort and potential health hazard posed by the smog.