more stats
1.6 miles
Distance
195 ft
Climb
-185 ft
Descent
00:19:38
Avg time
10 ft
Altitude change
178 ft
Altitude min
330 ft
Altitude max
247 ft
Altitude start
256 ft
Altitude end
0.1%
Grade
-20.4%
Grade max
31.9%
Grade min
3,451 ft
Distance climb
4,045 ft
Distance down
1,178 ft
Distance flat
00:19:38
Avg time

Yellow Loop Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
    • Snowshoe
  • Riding Area
    Great Hill Conservation Area
    Acton, Massachusetts
  • Difficulty Rating
    Black Diamond Rate
  • Voted Difficulty
    Black Diamond (1 vote)
  • Local Popularity
    45 in Mountain Biking [+]
    • 65 in Trail Running
    • 5 in Hiking
    • 5 in Snowshoeing
  • Global Ranking
    #289256 in Mountain Biking [+]
    • #80919 in Trail Running
    • #313298 in Hiking
    • #25830 in Snowshoeing
  • State Ranking
    #9,297 in Mountain Biking · Massachusetts [+]
    • #2,000 in Trail Running
    • #11,278 in Hiking
    • #3,035 in Snowshoeing
  • Trail Type
    Singletrack
  • Direction
    Both Directions
  • Trail Visibility
    Always easy to follow
  • Season
    Apr-Nov
  • Dogs Allowed
    Yes
  • eBike Allowed
    No
  • TTFs on Trail
    Bridge, Drop, Rock Garden
  • OSM Way
    #683262293

A rocky loop containing multiple very difficult rock gardens.

Disclaimer

YEILD TO DOG WALKERS

Tags
BridgesDropsJumpsRock gardens
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 1 rides
  • 3 miles avg distance
All
  • 3 rides
  • Last: Jun 6, 2026
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Yellow Loop Trail Reports

statusdatedescription
Aug 27, 2023 @ 7:03pm
Aug 27, 2023
 Most of the rock gardens are pretty wet and muddy
Sep 7, 2022 @ 6:18pm
Sep 7, 2022
Apr 25, 2022 @ 4:51pm
Apr 25, 2022
 Still a little wet in the north
Apr 15, 2022 @ 9:06am
Apr 15, 2022
 Wet in the north part, dry in the south part
Apr 12, 2022 @ 6:39pm
Apr 12, 2022
 Significant mud spots on the north side but everywhere else is ideal
more »
Status:
on Aug 27, 2023
Prevalent Mud
no votes yet
Your vote: 0

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      Directions to yellow-loop-524545 trailhead (42.465920, -71.452790)
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      Technical Trail Features (TTF)

      1 Review & Comments

      SizeableSender
      Should be renamed to NE Rock Garden Mecca. If you could not tell by my name idea, this trail has a ton of rock gardens.

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      Nearby Trails

      Great Hill Conservation Area

      This trails GPS track was originally sourced from OpenStreetMap and will always be available for download in OSM Format.

      Frequently Asked Questions

      ▼ Where is Yellow Loop located?
      Yellow Loop is located in Great Hill Conservation Area, Acton, Massachusetts, United States. It is part of the Great Hill Conservation Area trail network. The trailhead is located at coordinates 42.46592, -71.45279.
      ▼ How hard is Yellow Loop?
      Yellow Loop is rated as Black Diamond difficulty. The average grade is 0.1%.
      ▼ What is the elevation gain for Yellow Loop?
      Yellow Loop has 195 ft of elevation gain. The trail has 185 ft of elevation descent. The elevation ranges from 178 ft to 330 ft.
      ▼ Is Yellow Loop a point to point trail?
      Yellow Loop is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Yellow Loop?
      Yellow Loop is 1.6 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Yellow Loop?
      Yes, dogs are allowed on Yellow Loop. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Yellow Loop?
      Yellow Loop is best visited during: Apr-Nov.
      ▼ How do I access Yellow Loop? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Yellow Loop are: View all parking locations in the area.
      ▼ How long does it take to ride Yellow Loop?
      Based on recorded activities, it takes an average of 20 minutes to ride Yellow Loop. The trail is 1.6 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Yellow Loop?
      Yellow Loop is a moderately popular trail. There have been 17 recorded activities on this trail. The trail has received 19 check-ins. View recent activity on this trail.

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