Black Diamond Open Space

Frog Lake–Mainline, 3 sights

3 mi · ▲ 29 ft · 1 hr 1 min

Frog Lake–Mainline, 3 sights is a 3-mile out-and-back in Black Diamond Open Space near Henrys, WA. The route reaches Frog Lake at the turnaround, 1.3 miles in. It is mostly level, with 29 ft of elevation gain. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi528 – 587 ft3.7 mi

Getting there

Trailhead: connector 47.34102, -122.01835
Nearest town Henrys, WA

Directions

AMBLEWAYwww.ambleway.com

Frog Lake–Mainline, 3 sights

3 mi · ▲ 29 ft · 1 hr 1 min

Elevation 527–589 ft

Out & Back · Black Diamond Open Space

Trailhead: connector · 47.34102, -122.01835

Weather Aug 3: Overcast, high 76°F / low 49° · precip 0% · wind 5 mph · sunrise 5:50 AM · sunset 8:40 PM

Parking lot at the trailhead

  1. Start at the trailhead, heading S.
  2. 0.3 miTurn right, heading SW.
  3. 150 ftContinue straight onto Mainline, heading SW.
  4. 0.1 miContinue straight onto Lake Sawyer RR CO, heading SW.
  5. 0.1 miTurn left onto Mainline, heading SW.
  6. 0.1 miTurn right onto Red Dog, heading S.
  7. 0.2 miTurn right onto Plan A, heading SW.
  8. 50 ftBear left onto Red Dog, heading SW.
  9. 0.3 miTurn left, heading S.
  10. 250 ftTurn right, heading SW.
  11. 200 ftTurn left, heading SW.
  12. 150 ftPass Frog Lake.
  13. 350 ftBear left, heading SW.
  14. 250 ftBear left onto Frog Lake, heading S.
  15. 150 ftBear right, heading NW.
  16. 50 ftBear left onto Gravel Pit Ridge, heading NW.
  17. 250 ftReach Frog Lake, then turn around and head back the way you came.
  18. 300 ftBear right, heading SW.
  19. 50 ftBear left onto Frog Lake, heading SW.
  20. 150 ftBear right, heading SE.
  21. 250 ftBear right, heading S.
  22. 0.1 miTurn right, heading S.
  23. 200 ftTurn left, heading S.
  24. 250 ftTurn right onto Red Dog, heading SW.
  25. 0.3 miBear right onto Plan A, heading NE.
  26. 50 ftTurn left onto Red Dog, heading NE.
  27. 0.2 miTurn left onto Mainline, heading NE.
  28. 0.1 miTurn right onto Lake Sawyer RR CO, heading N.
  29. 0.1 miContinue straight onto Mainline, heading N.
  30. 0.2 miTurn left, heading N.
  31. 0.2 miArrive back at the trailhead.

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

Trail surface

5% dirt2% gravel93% unspecified

Weather

OvercastTemperature 76°F49°
Precip0%Wind5 mphUV7Humidity64%
Hourly temperature
80°45°
Sunrise 5:50 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:40 PM
Tue 85°55°
Wed 91°59°
Thu 90°58°
Fri 83°52°
Sat 82°51°
Sun 83°52°

Good to know

  • Parking lot at the trailhead

Other ways to reach this destination

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