Greens Creek can be accessed by driving west from Poncha Springs down Hwy 50 to CR 220, turn left and parallel Hwy 50 for a couple of miles until you hit CR 221 and turn left again and go 2.5 miles to the Greens Creek Trailhead.
Be advised that this out and back trail is open to moto but it remains one of the local favorite hikes and runs. The trail crosses two creeks and ends at a shelter on the Continental Divide. It is a 9 mile hike to the divide or 6 miles to the Greens Creek crossing. About a mile and a half past the Greens Creek crossing you will pass an old cabin site which is interesting. They have been steadily improving the trail for the past few years. Also be aware of the bears.