more stats
1,017 ft
Distance
3 ft
Climb
-66 ft
Descent
3,371 ft
High Point
-65 ft
Altitude change
3,306 ft
Altitude min
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

Thunderdog Details

  • Activities
    • Mountain Bike
    • E-Bike
  • Riding Area
    Hanson-Larsen Memorial Park
    Rapid City, South Dakota
  • Difficulty Rating
    Blue Rate
  • Voted Difficulty
    Blue (2 votes)
  • Local Popularity
    100 in Mountain Biking [+]
    • 100 in E-Biking
  • Trail Type
    Singletrack
  • Bike Type
    DH, AM, DJ
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Trail Visibility
    Always easy to follow
  • eBike Allowed
    Yes
  • TTFs on Trail
    Berm, 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
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 13 rides
  • 7 miles average
6 Months
  • 215 rides
  • 9 miles avg distance
All
  • 603 rides
  • Last: Aug 23, 2026
c1c2c3c4
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Status:
on Aug 12, 2026
Variable
Avg: 4.13 (3 votes)
Your vote: 0

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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.
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  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
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Trail Last Ridden
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  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
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  • > 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
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  • 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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ATV/ORV/OHV Filter
Max Vehicle Width
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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

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.

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Slope Aspect
Direction the slope faces
Flat N NE E SE S SW W NW
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        Directions to thunderdog trailhead (44.086730, -103.251140)
        View on Discover Map

        Photos

        7 more »
        mtb
        13 |
        Aug 8, 2026 @ 8:51pm
        Aug 8, 2026
        mtb
        51 |
        Jun 27, 2025 @ 11:37am
        Jun 27, 2025
        mtb
        66 |
        Jun 27, 2025 @ 11:03am
        Jun 27, 2025
        mtb
        44 |
        Jun 27, 2025 @ 11:03am
        Jun 27, 2025

        Videos

        2 more »
        Large jump
        mtb
        0:08 | 19 | Nov 21, 2025 , Rapid City
        Top of Trail
        mtb
        0:12 | 12 | Nov 21, 2025 , Rapid City
        4.7 ★★★★★
        3 Ratings
        5 ★ 67%
        4 ★ 33%
        3 ★
        2 ★
        1 ★

        2 Reviews & Comments


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        Nearby Trails

        Hanson-Larsen Memorial Park

        • By CABrickTF Pro & contributors
        • #778147 - 558 views

        Frequently Asked Questions About Thunderdog

        ▼ Where is Thunderdog located?
        Thunderdog is located in Hanson-Larsen Memorial Park, Rapid City, South Dakota, United States. It is part of the Hanson-Larsen Memorial Park trail network. The trailhead is located at coordinates 44.08673, -103.25114.
        ▼ How hard is Thunderdog?
        Thunderdog is rated as Blue difficulty. The physical rating is Moderate. The average grade is 6.4%. The climb difficulty is rated Blue.
        ▼ What is the elevation gain for Thunderdog?
        Thunderdog has 3 ft of elevation gain. The trail has 66 ft of elevation descent. The elevation ranges from 3,306 ft to 3,371 ft.
        ▼ How long is Thunderdog?
        Thunderdog is 1,017 ft long. The trail type is singletrack.
        ▼ Are dogs allowed on Thunderdog?
        There is no information about dogs being allowed on Thunderdog. Check with local trail managers or the trail page for the latest access rules.
        ▼ How do I access Thunderdog? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Thunderdog are: View all parking locations in the area.
        ▼ How busy is Thunderdog?
        Thunderdog is a very popular trail. There have been 1,840 recorded activities on this trail. The trail has received 2,677 check-ins. View recent activity on this trail.

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