They have a walking trail and bikes are welcome. If you enter by the Jess ranch shopping center you can walk or ride a bike along the top of the riverbed. It is nice and smooth so even my son with his small bike with training wheels was able to make it. It can get dusty of course, but after a light rain it is perfect. It is a straight line and you will see other people walking. A lot of people from Jess Ranch come here so they are older. Don’t go too far if you don’t want to walk all the way back. There are no cars allowed so you wont have to worry about your kids getting hit if they get ahead of you. Of course people use the riverbed for off-road use and who wouldn’t. My kids love riding their quads out here because we live close to the riverbed. I always see people with their jeeps and side by sides. There are a lot of trails leading from the houses to the riverbed so you can tell who comes out here a lot. we have never been messed with by the police but we always have helmets and are a block from our house. It is a do at your own risk kind of thing.