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1,201 ft
Distance
13 ft
Climb
-9 ft
Descent
00:02:30
Avg time
3 ft
Altitude change
618 ft
Altitude min
632 ft
Altitude max
618 ft
Altitude start
620 ft
Altitude end
0.2%
Grade
-5.3%
Grade max
5.9%
Grade min
495 ft
Distance climb
630 ft
Distance down
72 ft
Distance flat
00:02:30
Avg time
Perimeter 51 Details
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Activities
- Mountain Bike
- E-Bike
- Gravel Bike
- Winter Fat Bike
- Hike
- Trail Running
- Snowshoe
- Nordic Ski
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Riding AreaRogers Crossing
Bartlett, New Hampshire -
Difficulty Rating
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Local Popularity40 in Mountain Biking heatmap [+]
- 5 in E-Biking
- 85 in Trail Running
- 5 in Hiking
- 5 in Snowshoeing
- 5 in Nordic Skiing
- 5 in Winter Fat Biking
- 5 in Gravel Biking
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Global Ranking#274500 in Mountain Biking [+]
- #166003 in E-Biking
- #114251 in Trail Running
- #321375 in Hiking
- #32203 in Snowshoeing
- #31524 in Nordic Skiing
- #10548 in Winter Fat Biking
- #26786 in Gravel Biking
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State Ranking#2,500 in Mountain Biking · New Hampshire [+]
- #794 in E-Biking
- #1,503 in Trail Running
- #4,317 in Hiking
- #1,183 in Snowshoeing
- #1,211 in Nordic Skiing
- #183 in Winter Fat Biking
- #282 in Gravel Biking
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Hiking SAC ScaleT1 Hiking
-
Trail ExposureNormal
-
Trail TypeMachine Groomed
-
Bike TypeAM, XC, Fat, CX, Gravel
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Dogs AllowedYes
-
eBike Allowed
No community description for Perimeter 51 trail has been added yet!
AI Generated Description
Perimeter 51 is a 1,201 ft moderately popular green difficulty machine groomed trail located near Bartlett New Hampshire. This mountain bike primary trail. Exposure: Normal Injury Risk. On average it takes 2 minutes to complete this trail.
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
- 0 rides
All
- 42 rides
- Last: Oct 20, 2026
Perimeter 51 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 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.
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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
Max Vehicle Width
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Radar Time
Activity Recordings
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Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
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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
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Slope Aspect
Direction the slope faces
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Directions to perimeter-51 trailhead
(44.084320, -71.241030)
Photos
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Videos
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Routes with this trail
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2 miles • 59 ft • 10 • Loop • Race •
Race loop for Summer Race Series #2 at Rogers Crossing. Flat, fast and twisty, test your cornering skills...
2 miles • 53 ft • 8 • Loop • Race •
Summer Race Series #1 at Rogers Crossing in Bartlett NH Novice = 2 laps Sport = 5 laps Expert = 8 laps
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Nearby Trails
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- By BodieBowers
RogersX & contributors - #448895 - 463 views
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