1. Start on Great Meadows Trail, heading SW.
2. 50 ftPass Frog Pond.
3. 0.1 miBear right onto Big Boulder Trail, heading W.
4. 0.2 miTurn left onto Old Clamshell road, heading SW.
5. 50 ftPass Clamshell Pond.
6. 450 ftSharp right onto Powerline Trail, heading S.
7. 0.2 miBear right, heading N.
8. 0.2 miTurn left, heading NW.
9. 50 ftTurn right, heading NW.
10. 250 ftSharp right, heading W.
11. 0.2 miBear left, heading NE.
12. 0.1 miPass Clinton Tunnel - East Entrance.
13. 50 ftTurn right onto Central Massachusetts Branch, heading NW.
14. 0.2 miPass Clinton Tunnel - West Entrance.
15. 50 ftReach Lancaster Mill Pond, then turn around and head back the way you came.
16. 0.2 miTurn left, heading W.
17. 0.1 miBear right, heading SW.
18. 0.2 miSharp left, heading SW.
19. 300 ftTurn left, heading SW.
20. 50 ftTurn right, heading SW.
21. 0.2 miBear left onto Powerline Trail, heading S.
22. 0.2 miSharp left onto Old Clamshell road, heading S.
23. 500 ftTurn right onto Big Boulder Trail, heading NE.
24. 0.2 miBear left onto Great Meadows Trail, heading S.
25. 0.1 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/lancaster-mill-pond-clamshell-pond-out-back-3-lakes-5-km