Less than 1 mile south of Hoosier Pass, take the County Road (CR) 4 west from Colorado 9. Start measuring mileage when you turn onto CR 4. At 0.3 miles, stay straight. At 0.6 miles, stay straight. At 0.8 miles, go right on the higher road. At 1.4 miles, reach the parking area at Montgomery Reservoir. Cross a small bridge and continue around the reservoir. Near 1.6 miles, the road gets a little rough. Climb the hill for a bit and locate a turn-off to the left - at 1.7 miles. Turn left and park near a water shed and concrete wall. This is the trailhead.