5,236 ft
Distance
3 ft
Climb
-675 ft
Descent
00:09:01
Avg time
Trail Supporters, Builders & Maintainers of Boundary Line Trail
Boundary Line Details
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Activities
- Mountain Bike
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Riding AreaFrederick Watershed
Frederick, Maryland -
Difficulty Rating
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Voted DifficultyBlack Diamond (3 votes)
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Trail TypeSingletrack
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Bike TypeAM, DJ
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Trail UsageBiking Only
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DirectionDownhill OnlyPopular direction shown
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Physical RatingModerate
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Trail VisibilityAlways easy to follow
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eBike Allowed
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TTFs on TrailBerm, Jump, Gap Jump
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Local Popularity100 in Mountain Biking
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Year Opened2019
Machine built flow trail with multiple berms, gaps and tables. Part of a Recreation Trails Program grant project. Closed when conditions are soft or wet.
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
More Stats for Boundary Line mountain bike trail trail
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Altitude change-672 ft
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Altitude min814 ft
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Altitude max1,486 ft
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Altitude start1,486 ft
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Altitude end814 ft
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Grade-12.8%
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Grade max-40.3%
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Grade min1.8%
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Distance climb197 ft
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Distance down4,970 ft
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Distance flat72 ft
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Avg time00:09:01
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Avg reverse time00:32:21
- view trail stats
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs 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 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%
Trail Last Ridden
Trailforks scans ridelogs 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 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.
Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
Radar Time
LEGEND
Trail Difficulties
Trail Report Status
- Access Road/Trail
- White
- Green
- Blue
- Black
- Double Black Diamond
Trail Report Status
- Clear / Green
- Minor Issue / Yellow
- Significant Issue / Amber
- Closed
- Land Owner Overlay
- Wilderness (typically no bikes in USA)
- BLM (public)
- USFS (Wildlife sanctuaries darker than usfs)
- State land
- Indigenous
- Military
Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
- Map Markers
Trail Head
Photo
Directory Listing
Riding Area
TTF
Parking
Viewpoint
Information
Warning
Directions
Sight
Restrooms
eBike Charging Point
Water Fountain/Source
Gate
Trail Sign
Table or Bench
Ladder
Stairs
Bridge
Boardwalk
Camping
Cabin
Lodge
Bear Cache
Dock
Ranger Station
Summit
Other
Directions to boundary-line-261932 trailhead
(39.499100, -77.483030)
update trails status or condition
Boundary Line Trail Reports
view all reports »
Recent Ridelog Activity on Trail
Past Week
- 1 rides
- 3 miles avg distance
6 Months
- 366 rides
- 11 miles avg distance
All
- 545 rides
Routes with this trail
more »
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+ 2
Evantg123
(Apr 22, 2020 at 15:15)
What an incredible masterpiece of a downhill trail. It has it all. Thanks to all involved in building this and all the new FWS trails!
[Reply]
jsolomon214
(May 15, 2020 at 16:26)

The most bike park-esque trail in the shed. So much fun.
[Reply]

Blue Square flow trail most of the way but ends with a hard, steep black diamond rock garden. Much harder than three saws. Such a fun trail!
[Reply]

Starts off slow and then blasts down with nice berms and jumps all the way down - awesome trail!
[Reply]
Nearby Trails
- Three Saws 148 ft
- Stoner Road 148 ft
- A-line 148 ft
- Fun House 180 ft
- The Nose 827 ft
Frederick Watershed
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- By joemtber MORE Frederick & contributors
- #261932 - 1,832 views
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