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13.3 miles
Distance
1,760 ft
Climb
-1,763 ft
Descent
1,755 ft
High Point
-1 ft
Altitude change
740 ft
Altitude min
1,622 ft
Altitude start
1,621 ft
Altitude end
-52.9%
Grade max
44.1%
Grade min
5 miles
Distance climb
7 miles
Distance down
1 mile
Distance flat
Oh, it is on, like a prawn who yawns at dawn
Detailed Description
Loop A 13 is a 13 mile moderately popular expert route located near Frederick Maryland. This trail running only route. This route includes 5 trails. This route climbs 1,760 ft with a max elevation of 1,755 ft then descends -1,763 ft.
Trail Issues on Route
- Minor Issue / Yellow: 1 trail (newest: Mar 15, 2026)
Local Trail Association
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Stats
-
Distance13 miles
-
Avg time3 hr 11 min
-
Altitude change-1 ft
-
Altitude min740 ft
-
Altitude start1,622 ft
-
Altitude end1,621 ft
-
Climb1,760 ft
-
Descent-1,763 ft
-
Grade max-52.9%
-
Grade min44.1%
-
Distance climb5 miles
-
Distance down7 miles
-
Distance flat1 mile
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Trails in Route
| 2 miles | |||||
| 5,072 ft | |||||
| 1 mile | |||||
| 1 mile | |||||
| 1 mile |
Details
-
Riding area
-
Primary ActivityTrail Running
-
Difficulty ratingBlack Diamond
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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
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- Description & Photos
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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
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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
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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
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BC Backroad Status
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Slope Aspect
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Trails Deemphasized
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Trail transparency
- Singletrack
- Unpaved
Recent Trail Reports Along Route
more reports »
- By Old-Man-Kob & contributors
- #19308 - 810 views
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