1. Start at the trailhead, heading NE.
2. 0.3 miSharp right, heading SW.
3. 0.1 miSharp right onto Pacific Crest Trail, heading SW.
4. 0.2 miBear left, heading S.
5. 0.2 miTurn left onto Dutch Flat Donner Lake Wagon Road, heading SE.
6. 0.1 miSharp left, heading E.
7. 50 ftSharp right, heading E.
8. 50 ftBear right, heading E.
9. 500 ftTurn right onto Tunnel Rock Approach Trail, heading E.
10. 150 ftReach Tunnel Rock, then turn around and head back the way you came.
11. 150 ftTurn left, heading E.
12. 500 ftBear left, heading W.
13. 50 ftSharp left, heading W.
14. 50 ftSharp right onto Dutch Flat Donner Lake Wagon Road, heading E.
15. 0.1 miTurn right, heading W.
16. 0.2 miBear right, heading W.
17. 0.2 miSharp left, heading NE.
18. 500 ftSharp left onto Donner Summit Lakes Trail, heading NE.
19. 0.3 miArrive 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/tunnel-rock-donner-summit-lakes-trail-out-back-3-km-9d08