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1,375 ft
Distance
8 ft
Climb
-10 ft
Descent
00:02:19
Avg time
-3 ft
Altitude change
330 ft
Altitude min
341 ft
Altitude max
333 ft
Altitude start
331 ft
Altitude end
-0.2%
Grade
-6.7%
Grade max
4.6%
Grade min
381 ft
Distance climb
486 ft
Distance down
509 ft
Distance flat
00:02:19
Avg time
Upper Decker Details
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Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
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Riding AreaLake Fairfax Park
Reston, Virginia -
Difficulty Rating
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Voted DifficultyBlue (1 vote)
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Local Popularity80 in Mountain Biking [+]
- 55 in E-Biking
- 85 in Trail Running
- 65 in Hiking
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Global Ranking
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State Ranking
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Hiking SAC ScaleT1 Hiking
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Trail TypeSingletrack
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Bike TypeXC
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DirectionBoth Directions
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Climb DifficultyBlue
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Physical RatingModerate
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Trail VisibilityAlways easy to follow
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Dogs AllowedYes
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eBike AllowedYes up to Class 1
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TTFs on TrailRock Garden
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Land OwnerFairfax County Park Authority
Upper Decker connects the camp grounds to its north to Rails to River. It has lots of natural rock and narrow sight lines.
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
- 4 rides
- 11 miles average
6 Months
- 197 rides
- 13 miles avg distance
All
- 1,260 rides
- Last: Oct 20, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Upper Decker 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
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- 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.
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- popular
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- not popular
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Activity Recordings
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Activity Recordings
Trailforks uses anonymized public activity data.
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Missing 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
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BC Backroad Status
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Directions to upper-decker-31351 trailhead
(38.961320, -77.321310)
Photos
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Videos
no videos have been added for Upper Decker yet, add a video.
Routes with this trail
★ 1.5 • 8 miles • 688 ft • 11 •
OFF THE CHAIN TURTLE Memorial Ride Presented By: Evolution Cycling Club (501c3) benefitting The TURTLE...
★ 4.0 • 7 miles • 648 ft • 9 • Loop • Race •
Outlinening the race coarse to practice
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Nearby Trails
- Ferlin's Folly 26 ft
- Campground Connector 505 ft
- Frank The Track Connector 702 ft
- Hillside Trail 722 ft
- Pumptrack Trail 748 ft
- By frankraiti & contributors
- #31351 - 1,942 views
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