The Woodchute Jeep Trail starts at FR 503A just at the bend at mile marker 339 on Hwy 89A. High clearance 4x4 required, and if you have an aversion to brush scratches, this may not be the trail for you, as its status as being "little-known" also means lower traffic and more overgrowth after the wet season.
The trail is short--only about 5 miles and 1-1.5 hours off-pavement, with stops. It loops back down to Hwy 89A and you come out on the highway only 2 miles uphill from Jerome. For a gorgeous full-day of Jeeping, start with the Mingus Mountain trail, which takes off at the bottom of the mountain near the Cottonwood Airport, then loop back through Woodchute for those spectacular afternoon views.
Check it out for yourself!
More maps and info at JeepTrailInfo.com and Funtreks.com