Mammoth Rock–Grouse Trail, 3 sights
4.8 mi · ▲ 489 ft · 1 hr 51 min
Mammoth Rock–Grouse Trail, 3 sights is a 4.8-mile out-and-back in Upton State Forest near Upton, MA. The route reaches Mammoth Rock. It climbs 489 ft, with sections as steep as 17% grade. It scores 21/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi407 – 577 ft · steepest grade: 17%5.0 mi
Getting there
Trailhead: Rabbit Run 42.21344, -71.61113
Nearest town Upton, MA
Directions
AMBLEWAYwww.ambleway.com
Mammoth Rock–Grouse Trail, 3 sights
4.8 mi · ▲ 489 ft · 1 hr 51 min
Elevation 407–576 ft
Out & Back · Upton State Forest
Trailhead: Rabbit Run · 42.21344, -71.61113
Weather Aug 4: Heavy rain, high 77°F / low 68° · precip 83% · wind 5 mph · sunrise 5:43 AM · sunset 8:04 PM
Parking lot at the trailhead
- Start on Rabbit Run, heading NE.
- 2.1 miPass Mammoth Rock.
- 0.3 miContinue straight onto Grouse Trail, heading SW.
- 50 ftReach Mammoth Rock, then turn around and head back the way you came.
- 100 ftContinue straight onto Mammoth Rock Trail, heading SW.
- 2.3 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
1% dirt99% unspecified
Weather
Heavy rainTemperature 77°F68°
Precip83%Wind5 mphUV2Humidity79%
Rained 1″ 5 days ago
Hourly temperatureRain chance
80°65°
Sunrise 5:43 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:04 PM
Tue
82°63°
Wed
83°65°
Thu
84°68°
40%
Fri
94°71°
30%
Sat
91°70°
37%
Sun
95°70°
15%
Good to know
- Parking lot at the trailhead
Other ways to reach this destination
More from Rabbit Run Trailhead
- Old Hopkinton Spring Trail 2.1 mi · ▲ 227 ft
- Old Hopkinton Spring Trail 2.4 mi · ▲ 256 ft
- Old Hopkinton Spring Trail 3.5 mi · ▲ 430 ft
- Old Hopkinton Spring Trail 3.7 mi · ▲ 459 ft
- Loop Road & Swamp Trail via Park Road 4.1 mi · ▲ 407 ft
- Spring Road Trail via Old Hopkinton Spring Trail 4.8 mi · ▲ 489 ft
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