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1,775 ft
Distance
10 ft
Climb
-33 ft
Descent
00:03:44
Avg time
-22 ft
Altitude change
417 ft
Altitude min
451 ft
Altitude max
446 ft
Altitude start
423 ft
Altitude end
-1.3%
Grade
-6%
Grade max
6.8%
Grade min
240 ft
Distance climb
843 ft
Distance down
341 ft
Distance flat
00:03:44
Avg time
Upper Dumbledore Details
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Activities
- Mountain Bike
- Horse
- Hike
- Trail Running
-
Riding AreaPotter Hill Trails
Grafton, Massachusetts -
Difficulty Rating
-
Local Popularity100 in Mountain Biking [+]
- 100 in Trail Running
- 95 in Hiking
- 5 in Horseback
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Global Ranking
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State Ranking#1,051 in Mountain Biking · Massachusetts [+]
- #2,292 in Trail Running
- #2,131 in Hiking
- #726 in Horseback
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Trail TypeSingletrack
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Bike TypeXC
-
DirectionBoth Directions
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Climb DifficultyBlue
-
Physical RatingModerate
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Trail VisibilityAlways easy to follow
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Dogs AllowedYes
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Land Owner
No community description for Upper Dumbledore trail has been added yet!
AI Generated Description
Upper Dumbledore is a 1,775 ft popular blue difficulty singletrack trail located near Grafton Massachusetts. This multi-use trail can be used both directions and has a moderate overall physical rating with a 10 ft blue climb. Trail visibility is always easy to follow. On average it takes 3 minutes to complete this trail.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 1 rides
- 13.6 km average
6 Months
- 47 rides
- 15.8 km avg distance
All
- 342 rides
- Last: Oct 23, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Upper Dumbledore 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)
Trailforks scans users activity logs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs to determine the last time a trail was ridden.
- < 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
Contribute Details
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Trail Popularity ?
Trailforks scans activity logs 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.
Think of this as a heatmap, more activities = more kinetic energy = warmer colors.
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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
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Activity Recordings
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Activity Recordings
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Winter Trails
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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.
Jump Magnitude Heatmap
Heatmap of where users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Slope Aspect
Direction the slope faces
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Directions to upper-dumbledore trailhead
(42.213550, -71.728360)
Photos
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Videos
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