Checked out the trail heads today and took a few pic's and GPS coords.
Starting from the southern end of the trail, the first cairn is just across the boundry line between the Prescott Nat. Forest and the Kiabab Nat. Forest on County Rd. 73 at:
N35.0360 W112.2242
The first "official" trailhead, Bandit Trailhead is also on CR 73 at:
N35.0759 W112.2076
The second is at Summit Tank, off FS Rd 57:
N35.1191 W112.1502
The third is off CR 73 and FS 139 at:
N35.1519 W112.1460
Fourth one at Pomeroy Tanks, on FS 109, is at:
N35.1500 W112.0351
Between Pomeroy Tanks and the next trail head might be some of the most scenic hiking opportunities. The Sycamore Rim Trail and Overland Trail share trail heads, and while it does deviate from the Overland Trail by short distance, might be worth considering. I'm pretty limited hiking wise, but we did get in a short walk to Sycamore Vista from the Sycamore Rim Trailhead off FS 56:
N35.1361 W112.0045
The next trailhead past Pomeroy on the Overland Trail is Dow Springs off FS 131:
N35.1550 W111.9831
The last trail head is on FS 24 before the old trail enters a restricted area on Camp Navajo:
N35.1862 W111.9366
Later!
Mark