Hey Joe... are there some good MTB trails out of or close to Tuthill???
Yeah, you can ride Soldier's and Highland right there. Fort Tuthill is the trailhead. There's also the bike park.
If you're looking for a longer ride you can ride from Lake Mary Rd to Skunk Canyon to Skunk Canyon to Loop Trail all the way to Campbell Mesa and return on the Arizona Trail to Walnut Canyon/Fisher Point and return via Fay Canyon. You can connect to all that stuff on the south side of town from Tuthill on the airport loop trail but I haven't ridden that particular segment.