Riverside, CA is surrounded by several small urban mountains that provide great hiking and mountain biking options. I drove up to Martin Tudor Regional Park for the short 2.5 mile round trip hike to Mr. Jurupa (2217'). The trail is steep, gaining 1130' in just over a mile. But the attraction, or distraction, or outrage of this hike, depending on your point of view is the huge amount of graffiti art painted on the boulders. I am against defacing natural rocks, but I have to admit a lot of the art is pretty good. I think the city has given up trying to police it, leaving as an outdoor art gallery where you can also get some cardio.
Mt. Jurupa
Follow the white rabbit
Pink Floyd
Hunter S. Thompson
The San Gabriel Mountains from the Mt. Jurupa summit