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3,192 ft
Distance
-414 ft
Descent
00:07:15
Avg time
-414 ft
Altitude change
779 ft
Altitude min
1,193 ft
Altitude max
1,193 ft
Altitude start
778 ft
Altitude end
-13%
Grade
-31%
Grade max
-1.2%
Grade min
3,192 ft
Distance down
00:07:15
Avg time
Calculated Risk Details
-
Activities
- Mountain Bike
- E-Bike
-
Riding AreaSpirit Mountain Bike Park
Duluth, Minnesota -
Difficulty Rating
-
Local Popularity50 in Mountain Biking [+]
- 40 in E-Biking
-
Global Ranking
-
State Ranking
-
Trail TypeSingletrack
-
Bike TypeDH
-
Dogs AllowedYes
-
eBike AllowedYes up to Class 1
-
TTFs on TrailBerm, Drop, Rock Face, Rock Garden
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Land Owner
Calculated Risk – Most difficult / Expert
Calculated Risk is a expert level downhill trail with large jumps and lots of rock. This trail features the highest level of difficulty on the hill big high speed jumps and high consequence rock faces give this trail its expert rating. Experienced riders only.
Trail Supporters
Rock Solid Trail ContractingBuilder
Bike Park
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 16 rides
- 21 miles avg distance
All
- 135 rides
- Last: Oct 2, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Calculated Risk Trail Reports
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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.
?
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
![map legend]()
Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
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Directions to calculated-risk trailhead
(46.715720, -92.217900)
Photos
92 more »
Videos
7 more »
mtb
4:04 |
1404 |
Oct 27, 2018 , Duluth
mtb
0:08 |
800 |
Jan 3, 2020 , Duluth
mtb
3:08 |
8770 |
Feb 20, 2018 , Duluth
mtb
0:29 |
45106 |
Oct 23, 2015 , Duluth
Trail Products
-
COGGS branded gearOther
3 Reviews & Comments
trailwhacker
This trail is quite possibly one of the most fun trails I've ever ridden
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Nearby Trails
- Monkey Business 0 ft
- Smorgasbord 3 ft
- Blaster 72 ft
- Anvil 72 ft
- Timber Cruiser 161 ft
Spirit Mountain Bike Park
- By brenthillier
NSMBA TRAILFORKS & contributors - #7949 - 8,548 views
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