more stats
4,613 ft
Distance
46 ft
Climb
-145 ft
Descent
00:08:26
Avg time
-101 ft
Altitude change
664 ft
Altitude min
766 ft
Altitude max
765 ft
Altitude start
663 ft
Altitude end
-2.2%
Grade
-12.7%
Grade max
13.5%
Grade min
830 ft
Distance climb
2,694 ft
Distance down
1,089 ft
Distance flat
00:08:26
Avg time

Knapp Interval Details

  • Activities
    • Mountain Bike
    • Horse
    • Hike
    • Trail Running
    • Snowshoe
    • Nordic Ski
  • Riding Area
    Douglas State Forest
    Douglas, Massachusetts
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    30 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
    • 5 in Horseback
    • 5 in Snowshoeing
    • 5 in Nordic Skiing
  • Global Ranking
    #302573 in Mountain Biking [+]
    • #336500 in Trail Running
    • #323487 in Hiking
    • #25197 in Horseback
    • #21790 in Snowshoeing
    • #27124 in Nordic Skiing
  • State Ranking
    #10,021 in Mountain Biking · Massachusetts [+]
    • #10,724 in Trail Running
    • #12,050 in Hiking
    • #685 in Horseback
    • #2,194 in Snowshoeing
    • #1,173 in Nordic Skiing
  • Trail Type
    Singletrack
  • Bike Type
    XC
  • Direction
    Both Directions
  • Dogs Allowed
    Yes
  • eBike Allowed
    No
  • Land Owner
    Mass DCR

Named for a water flow trench put in the Mumford River to solve winter freeze up problems at the mills.
Very narrow single-track with a tricky stream crossing.

Access Info

Connects to the gas line at the northern end, southern end runs into Goodness.

Tags
Creek crossing
Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 1 rides
  • 4 miles avg distance
All
  • 29 rides
  • Last: Jul 24, 2026
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Knapp Interval Trail Reports

statusdatedescription
Jan 3, 2024 @ 7:59am
Jan 3, 2024
 clear of blowdowns
Oct 5, 2023 @ 10:34am
Oct 5, 2023
 Large tree down across trail, blocking trail
Jan 25, 2023 @ 3:02pm
Jan 25, 2023
downed trees cleared
Jan 23, 2023 @ 9:08am
Jan 23, 2023
 two trees down in the climb out of ravine just north of intersection of alternate trail, before gas line
Dec 9, 2020 @ 9:22am
Dec 9, 2020
 reporter
more »
Status:
on Jan 3, 2024
Dry
no votes yet
Your vote: 0

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      Directions to knapp-interval trailhead (42.085850, -71.794270)
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      Photos

      1 more »
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      mtb
      36 |
      Oct 5, 2023 @ 10:35am
      Oct 5, 2023

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      Routes with this trail

      76
      15.7 Douglas Loop
      ★ 3.0 • 16 miles • 926 ft • 50 • Loop •
      16 mile ride in Douglas - fun ride

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      Nearby Trails

      Douglas State Forest

      Frequently Asked Questions

      ▼ Where is Knapp Interval located?
      Knapp Interval is located in Douglas State Forest, Douglas, Massachusetts, United States. It is part of the Douglas State Forest trail network. The trailhead is located at coordinates 42.08585, -71.79427.
      ▼ How hard is Knapp Interval?
      Knapp Interval is rated as Blue difficulty. The average grade is 2.2%.
      ▼ What is the elevation gain for Knapp Interval?
      Knapp Interval has 46 ft of elevation gain. The trail has 145 ft of elevation descent. The elevation ranges from 664 ft to 766 ft.
      ▼ Is Knapp Interval a point to point trail?
      Knapp Interval is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Knapp Interval?
      Knapp Interval is 4,613 ft long. The trail type is singletrack.
      ▼ Are dogs allowed on Knapp Interval?
      Yes, dogs are allowed on Knapp Interval. Please keep dogs on a leash where required and clean up after them.
      ▼ How do I access Knapp Interval? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Knapp Interval are: View all parking locations in the area.
      ▼ How long does it take to ride Knapp Interval?
      Based on recorded activities, it takes an average of 8 minutes to ride Knapp Interval. The trail is 4,613 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Knapp Interval?
      Knapp Interval is a less popular trail with lighter traffic. There have been 115 recorded activities on this trail. The trail has received 116 check-ins. View recent activity on this trail.

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