1. Start on County Road 92J, heading W.
2. 250 ftSharp left onto Middle Saint Vrain Trail, heading SE.
3. 0.5 miTurn right onto Sourdough Trail, heading E.
4. 50 ftContinue straight onto Middle Saint Vrain Trail, heading E.
5. 250 ftContinue straight onto Sourdough Trail, heading S.
6. 2.2 miTurn right, heading SE.
7. 0.2 miTurn right onto Beaver Bog, heading S.
8. 50 ftTurn left, heading SW.
9. 0.4 miContinue straight onto Sourdough Trail, heading SW.
10. 3.2 miTurn left onto Waldrop Trail, heading SE.
11. 50 ftTurn right onto Sourdough Trail, heading SE.
12. 300 ftBear left onto Left Hand Reservoir Road, heading W.
13. 150 ftContinue straight onto Sourdough Trail, heading W.
14. 0.4 miReach Sourdough Trail, then turn around and head back the way you came.
15. 0.4 miContinue straight onto Left Hand Reservoir Road, heading NW.
16. 100 ftBear right, heading N.
17. 350 ftTurn left onto Waldrop Trail, heading N.
18. 50 ftTurn right onto Sourdough Trail, heading N.
19. 3.6 miTurn right onto Beaver Bog, heading N.
20. 50 ftTurn left, heading NE.
21. 0.2 miTurn left onto Sourdough Trail, heading E.
22. 2.2 miContinue straight onto Middle Saint Vrain Trail, heading E.
23. 250 ftContinue straight onto Sourdough Trail, heading E.
24. 50 ftTurn left onto Middle Saint Vrain Trail, heading E.
25. 0.5 miSharp right onto County Road 92J, heading NW.
26. 50 ftArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail map, photos and weather for this hike: www.ambleway.com/hikes/sourdough-trail-out-back-21-km-9b78