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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Inadequate
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (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%
- bi-directional trail
- no data
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
x
Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
- mountain biking recent
- mountain biking (>6 month)
- hiking (1 year)
- moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
- Downhill Ski
- Backcountry Ski
- Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.
Save the current map location and zoom level as your default home location whenever this page is loaded.
Saveshale and mineral rocky trails with some loam. Swoopy turns in second growth forest.
Primary Trail Type: Cross-Country
Land Status: City Managed
Access Info:
Thunder Mountain alluvial fan zone in Mendenhall Valley. Access via thunder mountain trail corridor.
Activities Click to view
- Mountain Bike
2 trails
- E-Bike
2 trails
- Hike
1 trails
- Trail Running
1 trails
Stats
- Avg Trail Rating
- Trails (view details)
- 2
- Trails Mountain Bike
- 2
- Trails E-Bike
- 2
- Trails Hike
- 1
- Trails Trail Running
- 1
- Total Distance
- 3,819 ft
- Total Descent Distance
- 3,796 ft
- Total Descent
- 260 ft
- Total Vertical
- 164 ft
- Highest Trailhead
- 219 ft
- Reports
- 1
- Photos
- 11
- Ridden Counter
- 32
Popular Under Thunder Mountain Biking Trails
| status | title | difficulty | rating |
|---|---|---|---|
| BTV | |||
| underthunder uptrack |
Photos of Under Thunder Mountain Bike
trail: underthunder uptrack
2 |
Jul 3, 2022 @ 8:08pm
2 days
trail: underthunder uptrack
2 |
Jul 3, 2022 @ 8:08pm
2 days
trail: BTV
5 |
Jul 3, 2022 @ 7:25pm
2 days
trail: BTV
5 |
Jul 3, 2022 @ 7:25pm
2 days
trail: BTV
5 |
Jul 3, 2022 @ 7:24pm
2 days
trail: BTV
106 |
Nov 29, 2019 @ 2:23pm
Nov 29, 2019
trail: BTV
85 |
Nov 29, 2019 @ 2:23pm
Nov 29, 2019
trail: BTV
81 |
Nov 29, 2019 @ 2:22pm
Nov 29, 2019Videos of Under Thunder Mountain Bike
trail: BTV
0:10 |
217 |
Jun 16, 2020
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| BTV | Jul 3, 2022 @ 8:11pm 2 days | Dry | Jamesfg6eis |
Activity Feed
| username | action | type | title | date | |
|---|---|---|---|---|---|
 | Jamesfg6eis | add | report | BTV | Jul 3, 2022 @ 8:11pm 2 days |
| Jamesfg6eis | comment | trail | BTV | Jul 3, 2022 @ 7:25pm 2 days |
| Jamesfg6eis | add | photo | in My City and 4 more | Jul 3, 2022 @ 7:24pm 2 days |
| Jamesfg6eis | ridden | trail | BTV | Jun 22, 2022 @ 11:13pm Jun 22, 2022 |
| mattnicodemus | ridden | trail | underthunder uptrack | May 21, 2021 @ 10:23am May 21, 2021 |
Recent Comments
| username | type | title | comment | date | |
|---|---|---|---|---|---|
| trail | Repaired Rollers on BTV | Jul 3, 2022 @ 7:25pm 2 days | ||
| trail | AKA as "Jimmy Hats" | Nov 21, 2019 @ 10:36am Nov 21, 2019 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| Dredge Lake | 11 | 24 | 1.5 km | ||
| West Glacier | 5 | 2 | 2.9 km | ||
| Ít'ji Shaánaxh, Silverbow Basin | 1 | 3 | 1 | 8.9 km |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 2 | 3,819 ft | 259 ft | 3,796 ft | 164 ft | #4,030 | #1,821 | 11 | 1 | 33 | ||
| E-Bike | 2 | 3,819 ft | 259 ft | 3,796 ft | 164 ft | #1,519 | #371 | 1 | ||||
| Hike | 1 | 1,857 ft | 144 ft | 1,857 ft | 144 ft | #4,212 | #2,051 | 1 | ||||
| Trail Running | 1 | 1,857 ft | 144 ft | 1,857 ft | 144 ft | #4,226 | #2,051 | 1 |
- By Bstoody & contributors
- Admins: JMBA
- #32405 - 1,865 views
- under thunder activity log | embed map of Under Thunder mountain bike trails |
Downloading of trail gps tracks in kml & gpx formats is enabled for Under Thunder.
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