more stats
7.3 miles
Distance
1,401 ft
Climb
-1,829 ft
Descent
01:14:26
Avg time
-428 ft
Altitude change
6,316 ft
Altitude min
7,391 ft
Altitude max
6,744 ft
Altitude start
6,316 ft
Altitude end
-1.112%
Grade
-122.679%
Grade max
149.154%
Grade min
3 miles
Distance climb
4 miles
Distance down
3,228 ft
Distance flat
01:14:26
Avg time

Princess Di Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Promontory
    Park City, Utah
  • Difficulty Rating
  • Local Popularity
    25 in Mountain Biking [+]
    • 25 in Trail Running
    • 5 in Hiking
  • Global Ranking
    #115787 in Mountain Biking [+]
    • #155608 in Trail Running
    • #204442 in Hiking
  • State Ranking
    #2,063 in Mountain Biking · Utah [+]
    • #3,644 in Trail Running
    • #4,543 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    XC
  • Direction
    Both Directions
  • Dogs Allowed
    Yes

Good flow and high speed XC trail outside PC.

Tags
Flowy

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 11 rides
  • 18 miles avg distance
All
  • 69 rides
  • Last: Sep 14, 2026
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Princess Di Trail Reports

statusdatedescription
Sep 23, 2026 @ 6:40pm (America/Denver)
Sep 23, 2026
Leaves are great. Tunnel is clear.
Nov 22, 2025 @ 1:10pm (America/Denver)
Nov 22, 2025
Perfect cold conditions. Beautiful day!
Jun 20, 2025 @ 11:57am
Jun 20, 2025
Similar to Glenwild rides. Open without much cover. Gradual climb with a lot of switchbacks, lose rock, narrow trail overgrown in spots. I doubt...
Jun 1, 2024 @ 3:45pm
Jun 1, 2024
All clear and good. A little dusty and loose on some of the exposed stretches, but all fine.
Jul 1, 2023 @ 8:32pm
Jul 1, 2023
Perfect conditions. Some tall grass. Some rocks. Some very large houses. I hope the poor owners can afford enough servants to keep them clean....
more »
Status:
on Sep 23, 2026
Avg: 3.79 (5 votes)
Your vote: 0

view (472)
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      Directions to princess-di trailhead (40.742230, -111.435080)

      Photos

      33 more »
      mtb
      40 |
      Aug 13, 2026 @ 4:29pm
      Aug 13, 2026
      mtb
      68 |
      Nov 22, 2025 @ 12:10pm
      Nov 22, 2025
      mtb
      140 |
      Jun 17, 2023 @ 6:07pm
      Jun 17, 2023
      mtb
      136 |
      Jun 17, 2023 @ 6:07pm
      Jun 17, 2023

      Videos

      no videos have been added for Princess Di yet, add a video.

      Trail Lists

      3.6 ★★★★★
      5 Ratings
      5 ★ 20%
      4 ★ 20%
      3 ★ 60%
      2 ★
      1 ★

      19 Reviews & Comments

      codekitchen
      I rode this CCW, starting at promontory climbing up three mile canyon. The climb was fun, the trail kept it interesting. The descent to I-80 is just ok, not bad but not very interesting. I may try it the other direction next time.

      The tunnel under I-80 is a bit tricky to find. Cross the overpass to the north side, then drop into the gully immediately on the right. There’s no gate in the tunnel anymore as of July 2026.
      Mplafferty
      Can I connect to the Rail Trail at Rt 80 in the tunnel somehow?
      Calitz
      Rode this CCW today starting at Rail Trail mile marker 6. This is a great X-country trail that needs more traffic to keep it in good condition. The first few miles are a easy climb up the paved trail and then the first few miles of single track go close to urban blight in various stages of construction. After this the trail takes you away from the McMansions and has quite an out-there feel. The fence at the tunnel at the end has been moved aside and is no longer an obstacle.

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      • By toddTF Pro Trailforks & contributors
      • #11388 - 9,014 views

      Frequently Asked Questions

      ▼ Where is Princess Di located?
      Princess Di is located in Promontory, Park City, Utah, United States. It is part of the Promontory trail network. The trailhead is located at coordinates 40.74223, -111.43508.
      ▼ How hard is Princess Di?
      Princess Di is rated as Blue difficulty. The average grade is 1.112%.
      ▼ What is the elevation gain for Princess Di?
      Princess Di has 1,401 ft of elevation gain. The trail has 1,829 ft of elevation descent. The elevation ranges from 6,316 ft to 7,391 ft.
      ▼ Is Princess Di a point to point trail?
      Princess Di is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Princess Di?
      Princess Di is 7.3 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Princess Di?
      Yes, dogs are allowed on Princess Di. Please keep dogs on a leash where required and clean up after them.
      ▼ How do I access Princess Di? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Princess Di are: View all parking locations in the area.
      ▼ How long does it take to ride Princess Di?
      Based on recorded activities, it takes an average of 1 hour 14 minutes to ride Princess Di. The trail is 7.3 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Princess Di?
      Princess Di is a less popular trail with lighter traffic. There have been 456 recorded activities on this trail. The trail has received 472 check-ins. View recent activity on this trail.

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