Do Not Take Bailey. I live near it. That would be nuts.

I love the Turtle Creek area. I live in that part of town.

Try this Morgan Territory Loop, 50 Miles. One of my favorites. A teensy bit of the early and safe part of Marsh Creek.
Morgan Territory Loop - A bike ride in Concord, CA

My Strava Profile: https://app.strava.com/athletes/14559

P.M. me via BikeForums if you want to ride. I have a bunch of other routes for this area to suggest.