more stats
1,932 ft
Distance
-505 ft
Descent
00:03:31
Avg time
-505 ft
Altitude change
583 ft
Altitude min
1,088 ft
Altitude max
1,088 ft
Altitude start
584 ft
Altitude end
-26.1%
Grade
-66.8%
Grade max
-4.4%
Grade min
1,906 ft
Distance down
26 ft
Distance flat
00:03:31
Avg time

'85 (Lower) Details

  • Activities
    • Mountain Bike
    • E-Bike
  • Riding Area
    Tualatin Mountain Forest (Rocky Point Trails)
    Portland, Oregon
  • Difficulty Rating
    Double Black Diamond Rate
  • Voted Difficulty
    Double Black Diamond (1 vote)
  • Local Popularity
    50 in Mountain Biking heatmap [+]
    • 45 in E-Biking
  • Global Ranking
    #34155 in Mountain Biking [+]
    • #59218 in E-Biking
  • State Ranking
    #351 in Mountain Biking · Oregon [+]
    • #427 in E-Biking
  • Trail Type
    Singletrack
  • eBike Allowed
    Yes up to Class 1
  • TTFs on Trail
    Drop
  • Year Opened
    2025
  • Land Owner
    OSU Research Forests

'85 was built by the Fat Tire Farm and named to commemorate the year the Farm was founded. It’s a natural and raw trail that gets progressively steeper the further down the trail you go. There are some natural features, but nothing you can’t roll. The final section requires commitment to steep chutes with catch berms

Access Info Restricted Access

These trails are not open to the general public. You must be a member of NWTA to access these trails as part of the land use agreement with OSU Research Forests. Please adhere to our land use agreement with OSU Research Forests.

Tags
BermsDrops

Local Trail Association

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 15 rides
  • 12 miles avg distance
All
  • 59 rides
  • Last: Jul 10, 2026
c1c2c3c4
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Status:
on Oct 18, 2026
Dry
Avg: 3.72 (7 votes)
Your vote: 0

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      Directions to 85-lower trailhead (45.669040, -122.901120)
      View on Discover Map 3D Tour

      Photos

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      report
      mtb
      54 |
      Aug 30, 2026 @ 2:37pm
      Aug 30, 2026

      Videos

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      One of our Local Bike Shops built a...
      mtb
      7:41 | 299 | Jul 11, 2025 , Portland
      3.6 ★★★★★
      7 Ratings
      5 ★ 43%
      4 ★ 29%
      3 ★
      2 ★
      1 ★ 29%

      1 Review & Comments

      white-shark-424
      Definitely the most sustained steep trail at RP, raw, bit loose and a lot of fun! I was able to take it slow (good grip on dry dirt) so never felt too fearful for my life haha

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      Nearby Trails

      Tualatin Mountain Forest (Rocky Point Trails)

      • By Scooter1TF Pro NWTA & contributors
      • #842051 - 679 views

      Frequently Asked Questions

      ▼ Where is '85 (Lower) located?
      '85 (Lower) is located in Tualatin Mountain Forest (Rocky Point Trails), Portland, Oregon, United States. It is part of the Tualatin Mountain Forest (Rocky Point Trails) trail network. The trailhead is located at coordinates 45.66904, -122.90112.
      ▼ How hard is '85 (Lower)?
      '85 (Lower) is rated as Double Black Diamond difficulty. The average grade is 26.1%.
      ▼ What is the elevation gain for '85 (Lower)?
      The trail has 505 ft of elevation descent. The elevation ranges from 583 ft to 1,088 ft.
      ▼ How long is '85 (Lower)?
      '85 (Lower) is 1,932 ft long. The trail type is singletrack.
      ▼ Are dogs allowed on '85 (Lower)?
      There is no information about dogs being allowed on '85 (Lower). Check with local trail managers or the trail page for the latest access rules.
      ▼ When is the best time of year to ride '85 (Lower)?
      Based on activity log data, the most popular months to ride '85 (Lower) are:
      • August (11 activities)
      • May (10 activities)
      • September (9 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access '85 (Lower)? Where is the closest parking trailhead?
      The closest parking and trailhead locations to '85 (Lower) are: View all parking locations in the area.
      ▼ How long does it take to ride '85 (Lower)?
      Based on recorded activities, it takes an average of 4 minutes to ride '85 (Lower). The trail is 1,932 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is '85 (Lower)?
      '85 (Lower) is a moderately popular trail. There have been 266 recorded activities on this trail. The trail has received 284 check-ins. View recent activity on this trail.

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