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1,017 ft
Distance
3 ft
Climb
-66 ft
Descent
00:01:38
Avg time
-65 ft
Altitude change
3,306 ft
Altitude min
3,371 ft
Altitude max
3,371 ft
Altitude start
3,307 ft
Altitude end
-6.4%
Grade
-22.2%
Grade max
6.8%
Grade min
141 ft
Distance climb
600 ft
Distance down
276 ft
Distance flat
00:01:38
Avg time
Thunderdog Details
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Activities
- Mountain Bike
- E-Bike
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Riding AreaHanson-Larsen Memorial Park
Rapid City, South Dakota -
Difficulty Rating
-
Voted DifficultyBlue (2 votes)
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Local Popularity100 in Mountain Biking [+]
- 100 in E-Biking
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Global Ranking
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State Ranking
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Trail TypeSingletrack
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Bike TypeDH, AM, DJ
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Climb DifficultyBlue
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Physical RatingModerate
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Trail VisibilityAlways easy to follow
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eBike Allowed
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TTFs on TrailBerm, Jump, Rock Garden
Thunderdog is a recently built flow trail with many berms of various sizes and several tabletop jumps. It has a quick upper loop, where you can practice hitting three jumps and six berms without losing too much elevation. It is designated MTB and downhill only. From the top, there is access to a dirt jump area down the hill to the west, near the U-Haul.
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 4 rides
- 5 miles average
6 Months
- 223 rides
- 10 miles avg distance
All
- 660 rides
- Last: Oct 17, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Thunderdog Trail Reports
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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)
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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.
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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
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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
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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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
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Directions to thunderdog trailhead
(44.086730, -103.251140)
Photos
7 more »
Videos
2 more »
mtb
0:08 |
22 |
Nov 21, 2025 , Rapid City
mtb
0:12 |
13 |
Nov 21, 2025 , Rapid City
superacingurl
Thanks for building it as a new flow jump trail vs degrading your awesome tech trails! Rides well, great blue jump trail
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Nearby Trails
- T Trail 10 ft
- T Trail Connector 495 ft
- Far West 607 ft
- M East 646 ft
- All American Trail - Abourezk Segment 787 ft
Hanson-Larsen Memorial Park
- By CABrick
& contributors - #778147 - 710 views
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