Boojum Rock–Cairn Hill, 4 summits is a 3.2-mile out-and-back in Middlesex Fells Reservation near Haywardville, MA. The route passes Cairn Hill and Boojum Rock before reaching Rock Circuit Viewpoint at the turnaround, 1.6 miles in. It climbs 332 ft, with sections as steep as 17% grade. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi92 – 279 ft · steepest grade: 17%4.2 mi
Getting there
Trailhead: blue trail 42.46521, -71.08201
Nearest town Haywardville, MA
Directions
AMBLEWAYwww.ambleway.com
Boojum Rock–Cairn Hill, 4 summits
3.2 mi · ▲ 332 ft · 1 hr 14 min
Elevation 91–279 ft
Out & Back · Middlesex Fells Reservation
Trailhead: blue trail · 42.46521, -71.08201
Weather Aug 3: Heavy rain, high 76°F / low 67° · precip 80% · wind 8 mph · sunrise 5:39 AM · sunset 8:03 PM
Dogs allowed on leash · Transit-accessible: Walton Pk @ Orris St stop 580 m from the trailhead · Parking lot at the trailhead
- Start at the trailhead, heading S.
- 300 ftBear left, heading SW.
- 0.2 miBear right onto Crystal Spring Path, heading SW.
- 0.2 miBear right onto Crystal Spring Road, heading S.
- 350 ftTurn left onto Crystal Spring Trail, heading SW.
- 150 ftTurn left, heading W.
- 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.
- 150 ftBear right, heading S.
- 0.2 miBear left onto Hemlock Pool Road, heading S.
- 0.1 miTurn right, heading S.
- 50 ftPass Rock Circuit Viewpoint.
- 150 ftSharp left onto Rock Circuit Trail, heading S.
- 50 ftReach Boojum Rock, then turn around and head back the way you came.
- 50 ftSharp right, heading S.
- 250 ftTurn left onto Hemlock Pool Road, heading S.
- 0.1 miBear right onto Reservoir Access Road, heading SE.
- 0.4 miTurn left onto Pipe Line Road, heading NW.
- 0.5 miContinue straight onto Crystal Spring Trail, heading N.
- 450 ftBear left, heading NE.
- 200 ftTurn right onto Crystal Spring Road, heading E.
- 350 ftBear left onto Crystal Spring Path, heading N.
- 0.2 miBear left, heading N.
- 0.2 miBear right onto orange 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
52% dirt16% gravel6% paved26% unspecified
Weather
Heavy rainTemperature 76°F67°
Precip80%Wind8 mphUV2Humidity80%
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°62°
Wed
83°63°
Thu
90°70°
15%
Fri
97°73°
26%
Sat
93°71°
40%
Sun
96°70°
Good to know
- Dogs allowed on leash
- Transit-accessible: Walton Pk @ Orris St stop 580 m from the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from blue trail Trailhead
- Whip Hill & Split Rock Loop via Crystal Spring Trail 1.1 mi · ▲ 91 ft
- Wamoset Hill–Spot Pond Loop, 4 summits 1.2 mi · ▲ 89 ft
- Crystal Spring Trail 1.9 mi · ▲ 231 ft
- Crystal Spring Trail 1.9 mi · ▲ 287 ft
- Crystal Spring Trail 2 mi · ▲ 237 ft
- Crystal Spring Trail 2 mi · ▲ 294 ft
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