Hike Mount Greylock via Thunderbolt Trail

Thunderbolt Trailhead, Adams, Massachusetts, United States

  • Activities:

    Hiking

  • Skill Level:

    Intermediate

  • Season:

    Year Round

  • Trail Type:

    Out-and-Back

  • RT Distance:

    4.8 Miles

  • Elevation Gain:

    2275 Feet

Bathrooms
Food Nearby
Forest
Picnic Area
Scenic
Wildlife

Located in the Berkshires, Massachusetts' high point will not disappoint. From the summit, views are possible into five different states: Massachusetts, New York, Connecticut, Vermont, and New Hampshire.

This hike starts in Adams, Mass on Thiel Road. You can drive the road as far as you can until you reach a barrier. There is plenty of room to park off the road on both sides. You will walk he road for 0.5 miles until you meet the foot trail, marked as Thunderbolt.

The Thunderbolt Ski trail was originally built in 1934 and rerouted in 1937. It was the site of Massachusetts State Downhill, Eastern Downhill Championship, and various local time trials and trophy races throughout the 1930's and 40's.

Climbing the eastern side of the mountain this is the steepest trail up Mount Greylock (Massachusetts high point 3491 feet). At about the 1 mile mark from your car the trail becomes considerably steep and heads toward the summit ridge. At approximately 1.9 miles you reach the summit ridge known as Hadley Lookout with beautiful views of the town of Adams below. The last 0.5 mile stretch is along the Appalachian trail. The trail will pass a small warning hut shelter.

The summit features A Veterans War Memorial Tower and Bascom Lodge featuring overnight accommodations and meals May - October. There is a road to the summit as well opened seasonally.

Pack List

  • Hiking Boot
  • Water
  • Snacks
  • Camera
  • Snowshoes (Winter)
Read More

Please respect the places you find on The Outbound.

Always practice Leave No Trace ethics on your adventures. Be aware of local regulations and don't damage these amazing places for the sake of a photograph. Learn More

Community Photos

+ Add Photos

Reviews

Overall rating: 

Leave a Review

The thunderbolt trail was challenging with near vertical trails towards the summit. A bit more nerve racking for me as I was leading a group of teenagers up it, but was well worth the accomplishment. Greylock offers phenomenal views from the top.

about 2 years ago
about 2 years ago

Rebecca Nichols Explorer

I hike to push my limits both mentally and physically, take in the beauty of the great outdoors, and just to get away from it all. Every chance I get you will find me in the mountains, on a kayak or ending my day by the campfire!

Are we missing something? Suggest an edit

Nearby Adventures

Hike the Sugar Bowl Loop in Kings Canyon NP

Tulare County, California

First and foremost, to get to this trailhead you need to drive down a 2-mile, one lane dirt road that is quite steep.

3 Saves

Hike to Ehukai Pillbox

59178 Ke Nui Road, Hawaii

This hike starts directly across from Banzai Pipeline, the famous barreling wave at Ehukai Beach.

7 Saves

Winter Hike to Calypso Cascades

1046 County Highway 115, Colorado

While most people go snowshoeing near the Bear Lake or Glacier Gorge area in RMNP, Wild Basin is a much less trafficked option.

5 Saves