I would not suggest this trail. The Apple Orchard Trail and some of the connector trails would be good for a gravel bike. See my video of the Apple Orchard trail on my channel.
Would this be a good place to bring one of my friends?? He is 9 years old and kind of a joey, I've been there but it wasn't as much as a stoker as fountainhead was, so the final question is would this be better or mount Vernon district park
I just rode this today for the first time. I wouldn't have a 9yr old run it unlss he is comfortable passing bikers coming at him. The trail goes both ways. You can run short loops though. I use the AllTrails app, and you can see the different loops on it.