Boojum Rock–Cairn Hill, 7 summits is a 3.2-mile out-and-back in Middlesex Fells Reservation near Haywardville, MA. The route passes Spot Pond, Crystal Spring Viewpoint, Cairn Hill and 2 more before reaching Rock Circuit Viewpoint at the turnaround, 1.6 miles in. It climbs 391 ft. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi92 – 285 ft4.0 mi
Getting there
Trailhead: Crystal Spring Trail 42.46300, -71.09032
Nearest town Haywardville, MA
Directions
AMBLEWAYwww.ambleway.com
Boojum Rock–Cairn Hill, 7 summits
3.2 mi · ▲ 391 ft · 1 hr 16 min
Elevation 91–285 ft
Out & Back · Middlesex Fells Reservation
Trailhead: Crystal Spring Trail · 42.46300, -71.09032
Weather Aug 4: Heavy rain, high 76°F / low 69° · precip 82% · wind 7 mph · sunrise 5:39 AM · sunset 8:03 PM
Dogs allowed on leash · Transit-accessible: Pond St opp Stone Zoo stop 110 m from the trailhead · Parking lot at the trailhead
- Start on Crystal Spring Trail, heading E.
- 50 ftBear left onto Whip Hill Road, heading SE.
- 0.2 miSharp right onto Saddleback Path, heading SW.
- 0.1 miPass Spot Pond.
- 100 ftTurn left onto Saddleback Path / Crystal Spring Trail, heading S.
- 50 ftPass Crystal Spring Viewpoint.
- 350 ftContinue straight onto Crystal Spring Trail, heading E.
- 500 ftTurn left, heading SE.
- 0.2 miBear right onto Pipe Line Road, heading S.
- 0.3 miTurn right onto Reservoir Access Road, heading S.
- 0.2 miPass Cairn Hill.
- 100 ftBear right, heading W.
- 0.2 miBear left onto Hemlock Pool Road, heading SE.
- 250 ftTurn right onto Rock Circuit Connector, heading SE.
- 200 ftPass 1899 MIT Observatory site.
- 50 ftTurn left onto Rock Circuit Trail, heading S.
- 500 ftPass Rock Circuit Viewpoint.
- 50 ftReach Boojum Rock, then turn around and head back the way you came.
- 0.1 miTurn right onto Rock Circuit Connector, heading SE.
- 250 ftTurn left onto Hemlock Pool Road, heading S.
- 300 ftBear right onto Reservoir Access Road, heading S.
- 0.4 miTurn left onto Pipe Line Road, heading NW.
- 0.5 miContinue straight onto Crystal Spring Trail, heading NE.
- 450 ftBear left, heading N.
- 500 ftContinue straight onto Saddleback Path / Crystal Spring Trail, heading N.
- 350 ftTurn right onto Saddleback Path, heading N.
- 50 ftTurn right, heading N.
- 0.1 miSharp left onto Whip Hill Road, heading N.
- 0.2 miBear right onto Crystal Spring Trail, heading N.
- 50 ftArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
49% dirt16% gravel35% unspecified
Weather
Heavy rainTemperature 76°F69°
Precip82%Wind7 mphUV2Humidity81%
Rained 0.8″ 4 days ago
Hourly temperatureRain chance
80°65°
Sunrise 5:39 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:03 PM
Tue
82°63°
Wed
83°63°
Thu
91°70°
24%
Fri
97°73°
26%
Sat
93°71°
42%
Sun
96°70°
Good to know
- Dogs allowed on leash
- Transit-accessible: Pond St opp Stone Zoo stop 110 m from the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Crystal Spring Trail Trailhead
- Whip Hill & Crystal Spring Trail Loop 1 mi · ▲ 108 ft
- Spot Pond–Crystal Spring Viewpoint, 3 lakes 2.4 mi · ▲ 115 ft
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Hikes near Haywardville, Massachusetts