Open in App
Get this trail on your phone instantly.
more stats
1,932 ft
Distance
-505 ft
Descent
1,088 ft
High Point
-505 ft
Altitude change
583 ft
Altitude min
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
'85 (Lower) Details
-
Activities
- Mountain Bike
- E-Bike
-
Riding AreaTualatin Mountain Forest (Rocky Point Trails)
Portland, Oregon -
Difficulty Rating
-
Voted DifficultyDouble Black Diamond (1 vote)
-
Local Popularity55 in Mountain Biking [+]
- 30 in E-Biking
-
Trail TypeSingletrack
-
eBike AllowedYes up to Class 1
-
TTFs on TrailDrop
-
Year Opened2025
-
Land OwnerOSU 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.
Local Trail Association
-
-
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
- 0 rides
6 Months
- 11 rides
- 14 miles avg distance
All
- 48 rides
- Last: Jun 21, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
'85 (Lower) Trail Reports
more »
close
-
Layers w
- Weather Layers
- Pro
- Pro
- Pro
- Pro
- Pro
- Pro
- More Layers
- Pro
- Pro
- Pro
- Pro
-
Upgrade to
3D
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)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
Trailforks scans ridelogs 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 ridelogs 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 rides = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
?
Activity Recordings
Trailforks uses anonymized public activity data.
?
Personal Heatmap
▶
Activity Types
all
/
none
▶
Options
2
Date range
month
–
Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
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 riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
![map legend]()
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
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
Save the current map location and zoom level as your default home location whenever this page is loaded.
Save
Directions to 85-lower trailhead
(45.669040, -122.901120)
Photos
No photos have been added for '85 (Lower) yet, add a photo.
Videos
1 more »
7:41 |
182 |
Jul 11, 2025 , Portland
We hope you've been enjoying Trailforks!
Create a FREE account to view trail comments and much more.
Nearby Trails
- Steepfake 909 ft
- Rocky Point South Road 1 (mid Road) 2,720 ft
- Hdw Access 2,795 ft
- Hot Dog Water 2,805 ft
- Hdw Access Lower 2,815 ft
Tualatin Mountain Forest (Rocky Point Trails)
- By Scooter1
NWTA & contributors - #842051 - 426 views
Frequently Asked Questions About '85 (Lower)
▼
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.
Hit the Trail
Download Trail
Save to wishlist, Garmin & download.
Find Related Routes
Find routes and users activities that include this trail.
You must enter a description before submitting.