- Northeast of Durango, near Pagosa Springs
- 14 mile roundtrip
- 7.5 to 8.5 hours
- Trailhead Elevation:
- 9200 feet
- Summer - Fall
About seven miles in length from the trailhead to the junction with the Divide Lake Trail (539), this trail meets the Hossick Creek Trail (585) at mile 2.2 and the East Fork of the Weminuche Trail (659) at mile 6.5.
POISON PARK TRAILHEAD - From Pagosa Springs, travel west on U.S. Hwy. 160 to Piedra Road (FDR 631), north 22 miles on Piedra Road, then right on Williams Lake Road (FDR 640). Proceed 3.5 miles, then turn left on FDR 664. Go 3 miles to the trailhead at road's end.