Massachusetts trails · Flat Rock Wildlife Sanctuary

Flat Rock Wildlife Sanctuary

A 7.0-mile network in Massachusetts, with 147 ft of climbing. Reaches Nichols Pond and other lake destinations. Managed by FLAT ROCK WILDLIFE SANCTUARY.

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Length

7.0 mi

Elevation gain

147 ft

Difficulty

Hard

Max grade

34%

Steepest mile

+147 ft

Tread at ≥10% grade

0.7 mi

Shape

network

Managed by

FLAT ROCK WILDLIFE SANCTUARY

Elevation profile

The climbing leans toward the first third: 47% of the ascent falls between mile 0.0 and mile 2.4. It gives back about 520 ft along the way, so it rolls rather than climbing steadily.

3-D terrain

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5

Reaches

Nichols Pond (lake)
Overlook Reservoir (lake)

Getting there

CROCKER CONSERVATION AREA access. About 1 min drive (0 mi) from Fitchburg. 42.59637, -71.81207 · directions

Daylight at the trailhead

On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:30 a.m., the sun rises at 6:58 a.m. and sets at 6:07 p.m., and the last usable light fades about 6:35 p.m. (EDT) — 11 h 08 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 7.0-mile route takes roughly 2 h 40 min, so leaving the trailhead at sunrise puts you back around 9:39 a.m. — 8 h 28 min before sunset.