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23.5 miles
Distance
1,242 ft
Climb
-1,245 ft
Descent
806 ft
High Point
506 ft
Altitude min
556 ft
Altitude start
558 ft
Altitude end
-21.7%
Grade max
28.8%
Grade min
7 miles
Distance climb
6 miles
Distance down
10 miles
Distance flat
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Detailed Description
Diamond Loop is a 24 mile moderately popular intermediate route located near Maple Valley Washington. This mountain bike only route. This route includes 50 trails. This route climbs 1,242 ft with a max elevation of 806 ft then descends -1,245 ft.
Trail Issues on Route
- Closed: 1 trail (newest: Aug 10, 2026)
- Significant Issue / Amber: 1 trail (newest: Sep 16, 2025)
- Minor Issue / Yellow: 4 trails (newest: Aug 15, 2026)
Local Trail Association
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Trail Products
Stats
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Distance24 miles
-
Altitude min506 ft
-
Altitude start556 ft
-
Altitude end558 ft
-
Climb1,242 ft
-
Descent-1,245 ft
-
Grade max-21.7%
-
Grade min28.8%
-
Distance climb7 miles
-
Distance down6 miles
-
Distance flat10 miles
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Trails in Route
Details
-
Riding area
-
Primary ActivityMountain Bike
-
Difficulty ratingBlue
-
eBike Allowed
-
Activity Logs
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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
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.
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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
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Slope Aspect
Direction the slope faces
Trails Deemphasized
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Trail transparency
- Singletrack
- Unpaved
- Paved
Photos
Videos
Recent Trail Reports Along Route
more reports »
- By beccabook
& contributors - #19614 - 2,436 views
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