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4,613 ft
Distance
46 ft
Climb
-145 ft
Descent
00:07:16
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
00:07:16
Avg time
Knapp Interval Details
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Activities
- Mountain Bike
- Horse
- Hike
- Trail Running
- Snowshoe
- Nordic Ski
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Riding AreaDouglas State Forest
Douglas, Massachusetts -
Difficulty Rating
-
Local Popularity40 in Mountain Biking [+]
- 5 in Trail Running
- 5 in Hiking
- 5 in Horseback
- 5 in Snowshoeing
- 5 in Nordic Skiing
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Global Ranking
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Trail TypeSingletrack
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Bike TypeXC
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DirectionBoth Directions
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Dogs AllowedYes
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eBike Allowed
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Land OwnerMass 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.
Local Trail Association
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-
Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 1 rides
- 10 miles avg distance
All
- 28 rides
- Last: Jan 13, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Knapp Interval Trail Reports
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
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- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
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Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months.
Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
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- popular
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Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
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BC Backroad Status
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Directions to knapp-interval trailhead
(42.085850, -71.794270)
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Nearby Trails
- Goodness 1,312 ft
- Alternate 2,313 ft
- Single Bit 3,757 ft
- Double Bit 4,810 ft
- Utility Clear Cut 4,820 ft
Douglas State Forest
- By hitthetrail
BVNEMBA Admins BVNEMBA DSF BVNEMBA USF & contributors - #136529 - 885 views
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Frequently Asked Questions About Knapp Interval
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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.
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How hard is Knapp Interval?
Knapp Interval is rated as Blue difficulty. The average grade is 2.2%.
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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.
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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.
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