Frank G. Bonelli Regional Park is an expansive park system complete with reservoir, swimming areas... and a surprisingly good trail system. However, it does cost $10 to park in the park, but there is a Park and Ride lot located just outside the entrance near the off ramp for the 57 Freeway. You can easily park your car there and ride into the park, getting access to the trails for free!
While at first the trails appeared to be just wide, gated gravel roads, as I continued around the park I started to find more and more singletrack. The trails were entertainingly rocky in places, and uber fast and smooth in others.
Despite having a trail map, I had issues following the designated route in places. As I was nearing the end of the loop, I took a wrong turn and ended up on a different trail that took me out of the park. It conveniently led me very near to where I had parked at the park and ride, so in the end everything worked out!
One word of caution: these trails are very exposed, and the majority of it has absolutely no shade or respite from the blazing sun. Ride early in the morning, or during times of the year when the temps are cooler.
 | Michael D. Antonovich Trail |  | 6 mi |
After the rain and after it was reopened the dirt was awesome. Lots of stream crossings. Parking at the trail head seems better. Just don't leave valuables in plain sight. 3 cars broken into the day I was here.
| ThankIt was a nice place to ride ..
| ThankIt was my first time at the park and I'm planing on coming back.
It's pretty local to me, but not a destination spot. Mostly fireroad, but some decent singletrack.
| ThankMy impression on Bonelli Park is "variety." It has a bit of everything. Tight single tracks, rock gardens, descents, rolling hills, trees, fast straightaways, etc. However, none of these features last long enough to really become enjoyable. The good thing is that the trail network is fairly developed and you can design your ride to cater to your riding needs. Given the right trails, the ride can be semi-technical OR be smooth and easy rolling for beginners.
Another interesting thing that I've found is the differing terrain on the north and southern ends. The southern end is dryer, looser, and rockier, similar to that of Sycamore Canyon in Riverside. As you approach the northern end, there are more trees and the path becomes more dirt than sand similar to Marshall Canyon.
Overall a good spot for a quick rides, exploring, or to bring a beginner with you.
| ThankMy impression on Bonelli Park is "variety." It has a bit of everything. Tight single tracks, rock gardens, descents, rolling hills, trees, fast straightaways, etc. However, none of these features last long enough to really become enjoyable. The good thing is that the trail network is fairly developed and you can design your ride to cater to your riding needs. Given the right trails, the ride can be semi-technical OR be smooth and easy rolling for beginners.
Another interesting thing that I've found is the differing terrain on the north and southern ends. The southern end is dryer, looser, and rockier, similar to that of Sycamore Canyon in Riverside. As you approach the northern end, there are more trees and the path becomes more dirt than sand similar to Marshall Canyon.
Overall a good spot for a quick rides, exploring, or to bring a beginner with you.
| ThankPretty good trails but not something I would travel for. Mostly fire road climbs followed by ST downhills.
| ThankGreat assortment of trails and single tracks on both the north side and south side of the park. If you want to free parking, park at Norms Hanger Restaurant next to the airport. The trailhead begins where the road ends.
| ThankAll rolling hills, nothing technical. Will keep you entertained with the network of tracks throughout the park.
| ThankGood riding conditions even though we had some rain.
| ThankDecent trail. Would be a good winter ride.
| Thank