Blue River Ranger District
From Blue River travel east on Hwy. 126 for 3.5 miles, turn right on
USFS Rd. #19 (Aufderheide National Scenic Byway) for 0.5 miles. At the
stop sign go straight onto USFS Rd. #19-410 for 1.75 miles, then turn left
onto USFS Rd. #19-411 for 2.25 miles. The trailhead is on the left and
hard to find.
This trail begins at 2,400 feet and terminates at 2,560 feet at USFS
Rd. #2639-480.
The Lower Castle Rock Trail goes through a heavy forest of second growth
Douglas-fir, on a gentle upward climb.
Length: 2.6 miles (4.18 km)
Use: Light
Difficulty: Easy to moderate