Open in App
Get this trail on your phone instantly.
more stats
1.3 miles
Distance
152 ft
Climb
-118 ft
Descent
00:14:35
Avg time
31 ft
Altitude change
304 ft
Altitude min
425 ft
Altitude max
304 ft
Altitude start
335 ft
Altitude end
0.5%
Grade
-11.3%
Grade max
18.6%
Grade min
2,730 ft
Distance climb
2,238 ft
Distance down
1,752 ft
Distance flat
00:14:35
Avg time
Mount Screwboy Details
-
Activities
- Mountain Bike
- Winter Fat Bike
- Hike
- Trail Running
- Snowshoe
-
Riding AreaPuddon Hill Trails
Upton, Massachusetts -
Difficulty Rating
-
Local Popularity90 in Mountain Biking [+]
- 5 in Trail Running
- 75 in Hiking
- 5 in Snowshoeing
- 5 in Winter Fat Biking
-
Global Ranking#61755 in Mountain Biking [+]
- #305814 in Trail Running
- #127117 in Hiking
- #16834 in Snowshoeing
- #31312 in Winter Fat Biking
-
State Ranking#962 in Mountain Biking · Massachusetts [+]
- #9,228 in Trail Running
- #5,153 in Hiking
- #1,584 in Snowshoeing
- #751 in Winter Fat Biking
-
Trail TypeSingletrack
-
Bike TypeAM, XC, Fat
-
DirectionBoth Directions
-
Climb DifficultyBlue
-
Physical RatingHard
-
Trail VisibilityAlways easy to follow
-
Dogs AllowedYes
-
eBike Allowed
-
TTFs on TrailRock Garden, Roller Coaster
Steady climb to the summit of the Puddon Hill Trail System.
Local Trail Association
-
-
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
- 10 rides
- 16 miles avg distance
All
- 101 rides
- Last: Sep 18, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Mount Screwboy Trail Reports
more »
close
3D
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
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- Videos
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.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
?
Activity Recordings
Trailforks uses anonymized public activity data.
?
Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
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
![map legend]()
Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
Save the current map location and zoom level as your default home location whenever this page is loaded.
Save
Directions to mount-screwboy trailhead
(42.151860, -71.620730)
Photos
3 more »
Videos
no videos have been added for Mount Screwboy yet, add a video.
CSC3
Good twisty, single track. Fun trail but but sure your legs are ready for the climb. It’s a beast.
We hope you've been enjoying Trailforks!
Create a FREE account to view all trail reviews and much more.
Nearby Trails
- Puddon Thruway 666 ft
- Diaper Change 991 ft
- Puppet Show 1,234 ft
- Midway Connection 1,348 ft
- West River 1,503 ft
- By WillieJacobsz
Trailforks SBP SWW & contributors - #231684 - 1,004 views
- Follow/Subscribe
- login to download gpx or kml files.
Hit the Trail
Download Trail
Save to wishlist, Garmin & download.
Find Related Routes
Find routes and users activities that include this trail.
You must enter a description before submitting.