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5.5 miles
Distance
474 ft
Climb
-468 ft
Descent
285 ft
High Point
7 ft
Altitude change
143 ft
Altitude min
205 ft
Altitude start
213 ft
Altitude end
-18.3%
Grade max
16.9%
Grade min
2 miles
Distance climb
2 miles
Distance down
4,721 ft
Distance flat
Squiggly loop hitting the three black diamond trails.
Detailed Description
LLF The Fun Stuff is a 6 mile popular intermediate route located near Burlington Massachusetts. This mountain bike only route can be used both directions. This route includes 32 trails. This route climbs 474 ft with a max elevation of 285 ft then descends -468 ft.
Trail Issues on Route
- Minor Issue / Yellow: 3 trails (newest: Jan 11, 2026)
Local Trail Association
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Stats
-
Distance6 miles
-
Avg time1 hr 24 min
-
Altitude min143 ft
-
Altitude start205 ft
-
Altitude end213 ft
-
Climb474 ft
-
Descent-468 ft
-
Grade max-18.3%
-
Grade min16.9%
-
Distance climb2 miles
-
Distance down2 miles
-
Distance flat4,721 ft
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Trails in Route
| 1,440 ft | |||||
| 1,686 ft | |||||
| 1,099 ft | |||||
| 128 ft | |||||
| 2,700 ft | |||||
| 276 ft | |||||
| 285 ft | |||||
| 305 ft | |||||
| 436 ft | |||||
| 95 ft | |||||
| 2,149 ft | |||||
| 558 ft | |||||
| 1,575 ft | |||||
| 312 ft | |||||
| 272 ft | |||||
| 1,801 ft | |||||
| 105 ft | |||||
| 3,281 ft | |||||
| 600 ft | |||||
| 1,332 ft |
Details
-
Riding area
-
Primary ActivityMountain Bike
-
Difficulty ratingBlue
-
Route TypeLoop
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Bike typeAM, XC
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DirectionBoth Directions
-
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.
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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
- less popular
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ATV/ORV/OHV Filter
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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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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
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
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- Singletrack
- Unpaved
Photos
Videos
Recent Trail Reports Along Route
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- By TXBDan & contributors
- #14838 - 3,267 views
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