1. Start at the trailhead, heading S.
2. 0.1 miBear right, heading SE.
3. 0.2 miBear left, heading SE.
4. 400 ftBear right, heading SE.
5. 0.3 miContinue straight onto Old, heading S.
6. 350 ftTurn left onto Cascara Trail, heading SW.
7. 0.1 miTurn left onto Whispering Firs Trail, heading S.
8. 0.1 miTurn left onto Mainline Trail, heading SE.
9. 50 ftTurn right, heading E.
10. 50 ftReach Mainline Trail, then turn around and head back the way you came.
11. 50 ftTurn right onto Whispering Firs Trail, heading E.
12. 0.1 miTurn right onto Cascara Trail, heading W.
13. 0.1 miTurn right onto Old, heading NW.
14. 0.3 miBear left, heading E.
15. 450 ftBear right, heading SE.
16. 0.2 miBear left, heading NW.
17. 350 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/mainline-trail-out-back-3-km-e967