more stats
1,132 ft
Distance
-156 ft
Descent
00:07:19
Avg time
-158 ft
Altitude change
3,365 ft
Altitude min
3,523 ft
Altitude max
3,523 ft
Altitude start
3,366 ft
Altitude end
-14%
Grade
-31.4%
Grade max
-2.1%
Grade min
1,115 ft
Distance down
16 ft
Distance flat
00:07:19
Avg time

Gem Slabs Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Catalina State Park / 50-Year
    Tucson, Arizona
  • Difficulty Rating
    Double Black Diamond Rate
  • Voted Difficulty
    Double Black Diamond (2 votes)
  • Local Popularity
    90 in Mountain Biking [+]
    • 5 in Trail Running
    • 50 in Hiking
  • Trail Type
    Singletrack
  • Direction
    Downhill Only
    Popular Direction Shown
  • Trail Visibility
    Sometimes hard to follow
  • TTFs on Trail
    Rock Face, Rock Garden

Very technical and fun alternative rock slab line for the Gem trail. Very steep in spots.

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 2 rides
  • 10 miles average
6 Months
  • 11 rides
  • 14 miles avg distance
All
  • 128 rides
  • Last: Sep 5, 2026
c1c2c3c4
January
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March
April
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Status:
on Jan 28, 2026
Ideal
Avg: 4.1 (4 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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  • > 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
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  • Description
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  • Description & Photos
  • Videos
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BC Backroad Status

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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 gem-slabs trailhead (32.499210, -110.861620)
        View on Discover Map

        Photos

        5 more »
        mtb
        21 |
        May 25, 2026 @ 11:34am
        May 25, 2026
        mtb
        76 |
        Feb 2, 2026 @ 7:50am
        Feb 2, 2026
        mtb
        53 |
        Jan 28, 2026 @ 8:17pm
        Jan 28, 2026
        mtb
        191 |
        Jan 25, 2025 @ 7:20pm
        Jan 25, 2025

        Videos

        2 more »
        Gem
        mtb
        5:37 | 8 | Sep 3, 2026 , Tucson
        Gem Slabs and Middle Gate: Best of the 50-Year...
        mtb
        11:01 | 589 | Mar 7, 2023 , Tucson

        Routes with this trail

        47
        50 Year All the Goods V2
        ★ 5.0 • 14 miles • 1,668 ft • 8 •
        Similar to the V1 route, but takes Gem Slabs instead of Chutes. The bottom portion of Gem is similar to...
        4.5 ★★★★★
        4 Ratings
        5 ★ 75%
        4 ★
        3 ★ 25%
        2 ★
        1 ★

        1 Review & Comments


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        Nearby Trails

        Catalina State Park / 50-Year

        • By AK-BikingTF Pro & contributors
        • #609897 - 1,448 views

        Frequently Asked Questions About Gem Slabs

        ▼ Where is Gem Slabs located?
        Gem Slabs is located in Catalina State Park / 50-Year, Tucson, Arizona, United States. It is part of the Catalina State Park / 50-Year trail network. The trailhead is located at coordinates 32.49921, -110.86162.
        ▼ How hard is Gem Slabs?
        Gem Slabs is rated as Double Black Diamond difficulty. The average grade is 14%.
        ▼ What is the elevation gain for Gem Slabs?
        The trail has 156 ft of elevation descent. The elevation ranges from 3,365 ft to 3,523 ft.
        ▼ Is Gem Slabs a point to point trail?
        Yes, Gem Slabs is a point to point trail. The direction is Downhill Only. The trail type is singletrack.
        ▼ How long is Gem Slabs?
        Gem Slabs is 1,132 ft long. The trail type is singletrack.
        ▼ Are dogs allowed on Gem Slabs?
        There is no information about dogs being allowed on Gem Slabs. Check with local trail managers or the trail page for the latest access rules.
        ▼ How do I access Gem Slabs? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Gem Slabs are: View all parking locations in the area.
        ▼ How long does it take to ride Gem Slabs?
        The estimated time to ride Gem Slabs is approximately 7 minutes. The trail is 1,132 ft long. Actual times will vary based on fitness level, conditions, and pace.
        ▼ How busy is Gem Slabs?
        Gem Slabs is a very popular trail. There have been 884 recorded activities on this trail. The trail has received 907 check-ins. View recent activity on this trail.

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