1. Start on Cherry Blossom Trail, heading NW.
2. 300 ftContinue straight onto Old Barn Road, heading NW.
3. 400 ftSharp right onto Wissahickon Trail, heading E.
4. 0.3 miSharp left onto Archery Trail, heading S.
5. 250 ftReach Archery Trail, then turn around and head back the way you came.
6. 300 ftContinue straight onto Wissahickon Trail, heading NE.
7. 350 ftBear left onto Old Wissahickon Road, heading W.
8. 0.1 miSharp left, heading W.
9. 50 ftSharp right onto Wissahickon Trail, heading W.
10. 0.1 miTurn right onto Watson's Trail, heading SW.
11. 350 ftSharp right onto Bridle Trail, heading W.
12. 0.3 miBear right onto Riverview Drive, heading S.
13. 150 ftBear left, heading S.
14. 150 ftContinue straight onto Violet Lane Trail, heading S.
15. 0.2 miBear left, heading SE.
16. 0.2 miTurn left onto Snyder's Point Trail, heading NE.
17. 150 ftTurn left onto Deer Hollow Trail, heading NE.
18. 0.1 miBear left, heading SW.
19. 0.2 miSharp left onto Short-Cut Trail, heading NE.
20. 350 ftSharp right, heading NE.
21. 450 ftSharp left, heading W.
22. 350 ftTurn right onto Bear Pit Road, heading NE.
23. 100 ftContinue straight onto Bob Harvey Trail, heading NE.
24. 450 ftContinue straight onto Bear Pit Trail, heading SW.
25. 250 ftContinue straight onto Playground Trail, heading NW.
26. 0.1 miTurn left onto Observatory Trail Extension, heading NE.
27. 150 ftContinue straight onto Observatory Trail, heading NW.
28. 0.2 miContinue straight onto Old Barn Road, heading W.
29. 400 ftContinue straight onto Cherry Blossom Trail, heading W.
30. 200 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/observatory-hill-bob-harvey-trail-out-back-4-sights-4-km