more stats
1,932 ft
Distance
9 ft
Climb
-11 ft
Descent
00:04:50
Avg time
-4 ft
Altitude change
168 ft
Altitude min
180 ft
Altitude max
175 ft
Altitude start
171 ft
Altitude end
-0.2%
Grade
-5.9%
Grade max
4.5%
Grade min
404 ft
Distance climb
558 ft
Distance down
968 ft
Distance flat
00:04:50
Avg time

Keyes Loop Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Great Brook Farm State Park
    Carlisle, Massachusetts
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    100 in Mountain Biking [+]
    • 90 in Trail Running
    • 95 in Hiking
  • Global Ranking
    #51406 in Mountain Biking [+]
    • #86280 in Trail Running
    • #90977 in Hiking
  • State Ranking
    #706 in Mountain Biking · Massachusetts [+]
    • #2,253 in Trail Running
    • #2,927 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    XC, Fat
  • Direction
    Both Directions
  • Climb Difficulty
    Green
  • Physical Rating
    Easy
  • Trail Visibility
    Always easy to follow
  • Season
    April - November
  • Dogs Allowed
    Yes
  • eBike Allowed
    No

Easy but fun. Lots of tight twists, less rocky than other GB trails.

Access Info

Access from Pine Point Loop

Tags

Local Trail Association

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 8 rides
  • 12 miles average
6 Months
  • 200 rides
  • 12 miles avg distance
All
  • 1,224 rides
  • Last: Oct 25, 2026
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update trails status or condition

Keyes Loop Trail Reports

statusdatedescription
Dec 3, 2024 @ 9:30am
Dec 3, 2024
Apr 4, 2021 @ 11:28am
Apr 4, 2021
 Tree noted in August still down but hoppable. First time through and ad a beginner, it was lots of fun.
Aug 1, 2020 @ 9:10am
Aug 1, 2020
 Major tree down about 6in diameter in in rideabke just walkable
Mar 30, 2019 @ 3:10pm
Mar 30, 2019
 reporter Running great. Isolated normal wet spots
Jul 28, 2018 @ 5:59am
Jul 28, 2018
more »
Status:
on Dec 3, 2024
Dry
Avg: 4.19 (4 votes)
Your vote: 0

view (4,033)
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      Directions to keyes-loop trailhead (42.553070, -71.340420)
      View on Discover Map

      Photos

      2 more »
      report
      mtb
      176 |
      Aug 4, 2020 @ 12:36pm
      Aug 4, 2020
      report
      mtb
      138 |
      Aug 1, 2020 @ 9:11am
      Aug 1, 2020

      Videos

      no videos have been added for Keyes Loop yet, add a video.

      Routes with this trail

      83
      Great Brook Farm Traverse Advanced Loop
      ★ 5.0 • 29 miles • 1,745 ft • 46 • Loop •
      A loop Featuring trails from Great Brook Farm State Park, Russtle Mill State Forest, and Billrica trails.
      13
      PK: Great Brook Farm Intermediate Route 2025 Featured
      ★ 3.3 • 11 miles • 579 ft • 17 • Out & Back •
      This is an intermediate 12 mile route which leaves from the Ski parking area. The route starts out on the...
      82
      2024 Great Brook Advanced Trifecta Route - PK Memorial
      ★ 2.5 • 30 miles • 1,840 ft • 57 • Loop •
      2024 NEMBA PK Memorial Advanced ride route. The route outside of Great Brook will not be marked....

      Links

      4.5 ★★★★★
      4 Ratings
      5 ★ 50%
      4 ★ 50%
      3 ★
      2 ★
      1 ★

      1 Review & Comments

      adventuremore adventuremore
      A couple of punchy wall rollovers / jump lines with good traction in between. Attack this trail with energy and be rewarded with poppy twists and turns.

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      Nearby Trails

      Great Brook Farm State Park

      • By menbatthews & contributors
      • #68960 - 1,931 views

      Frequently Asked Questions

      ▼ Where is Keyes Loop located?
      Keyes Loop is located in Great Brook Farm State Park, Carlisle, Massachusetts, United States. It is part of the Great Brook Farm State Park trail network. The trailhead is located at coordinates 42.55307, -71.34042.
      ▼ How hard is Keyes Loop?
      Keyes Loop is rated as Blue difficulty. The physical rating is Easy. The average grade is 0.2%. The climb difficulty is rated Green.
      ▼ What is the elevation gain for Keyes Loop?
      Keyes Loop has 9 ft of elevation gain. The trail has 11 ft of elevation descent. The elevation ranges from 168 ft to 180 ft.
      ▼ Is Keyes Loop a point to point trail?
      Keyes Loop is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Keyes Loop?
      Keyes Loop is 1,932 ft long. The trail type is singletrack.
      ▼ Are dogs allowed on Keyes Loop?
      Yes, dogs are allowed on Keyes Loop. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Keyes Loop?
      Keyes Loop is best visited during: April - November.
      ▼ How do I access Keyes Loop? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Keyes Loop are: View all parking locations in the area.
      ▼ How long does it take to ride Keyes Loop?
      Based on recorded activities, it takes an average of 5 minutes to ride Keyes Loop. The trail is 1,932 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Keyes Loop?
      Keyes Loop is a very popular trail. There have been 3,888 recorded activities on this trail. The trail has received 4,033 check-ins. View recent activity on this trail.

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