4 (0=Paved, 6=Very Difficult 4WD)
2WD paved access to 9,750' from the north via Castle Creek road out of Aspen. Rough, Rocky 2WD access to approx. 9,900' by turning right on the dirt road at the end of Castle Creek road. This road continues into Castle Creek. 4WD access to 12,800' by following the same road up past the Montezuma Mine and into a basin north of Castle Peak. Note: Near 11,100' there is a road junction. Stay right to continue toward Montezuma Mine. Turning left will take you toward Pearl Pass.
Take Castle Creek from the roundabout just west of the center of Aspen. Drive 12.5 miles (paved) to the Castle Creek trailhead. To the right, Forest Road (FR) 102 continues all all the way to 12,800'. Good-clearance passenger cars can drive about 1 mile up this road to reach the dispersed camp sites along the road. If you want to shorten your hike by parking higher, you must have a 4WD vehicle with good clearance. From the lower trailhead parking area, proceed to a river crossing, at 1.3 miles. In spring and early summer, this crossing is a challenge for some 4WD vehicles. At 3 miles, reach the Pearl Pass junction and stay right on the Castle Creek 102 road. If you drove up this far, there are a few parking spots near the junction. The road gets worse as it ascends into Montezuma Basin all the way to 12,800'.
Closed at the start of the dirt road.