OpenTrail
Search trails

North Fork Trail #3666

Hard · Ivy

Willamette National Forest, Oregon

Directions

No photos yet

Add the first

17.0 km10.5 mi

Distance

661 m2169 ft

Elevation gain

4h 50m

Est. time

Route

Route type

What to expect on this trail

  • Natural surface
  • Steep
  • Rolling
  • Hiking
How these were worked out
Natural surfacerecorded
OpenStreetMap records the surface of this trail as "ground". Source: OpenStreetMap, high confidence.
Steepestimated
Nine tenths of this trail is at or below a 23.6% grade, and its steepest climb reaches 71.5%. Source: DEM terrain profile, high confidence.
Rollingestimated
The grade varies by 14.1 percentage points along the route rather than climbing steadily. Source: DEM terrain profile, moderate confidence.

Biking is not listed. That means no explicit permission is recorded, which is not the same as a prohibition — see the bike section below.

Ivy's Peak Challenge Steep, long, or rough. Experienced hikers will love it.

About this trail

North Fork Trail #3666 is a 17.0 km trail in Oregon. Route imported from OpenStreetMap (© OpenStreetMap contributors, ODbL); community descriptions, photos, and condition reports welcome.

Play the route

Fly the trail end to end, with the climb as it comes.

Conditions

Loading forecast…

Elevation profile

Terrain sampled every 35 m from public elevation data.

Descent
547 m
High point
493 m
90th percentile grade
23.6%
492 m410 m327 m0 m8.2 km16.4 km

Bike access & suitability

Legal permission and physical difficulty are evaluated separately.

Conditional access

Legal access

conditional

Bicycle permission is explicit on part of the route; remaining segments are undocumented.

Confirm access on undocumented segments before riding.

Estimated MTB suitability

Difficult

53% confidence - score 66/100

  • - Terrain: 23.6% 90th-percentile grade and 39 m climbing per km.
  • - Surface: ground.

Source: Explicit OpenStreetMap access tags - OpenStreetMap contributors - checked Aug 2, 2026 - rules v2

View access evidence

Posted signs and current land-manager closures always override OpenTrail.

Report incorrect bike access

Trails nearby

Other routes within about 15 km.

Photos

Location metadata is stripped from uploads automatically. New photos are reviewed by a moderator before they appear publicly.

No photos yet.

Reviews

Create a free account to review this trail.

Frequently asked

How long is North Fork Trail #3666?

North Fork Trail #3666 is 17.0 km (10.5 miles) as a route. Allow roughly 4h 50m at a steady walking pace, not counting stops.

How hard is North Fork Trail #3666?

OpenTrail rates it hard. It climbs about 661 m overall, and its steepest sustained stretches run around 24%.

Where is North Fork Trail #3666?

North Fork Trail #3666 is in Willamette National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.

Is there parking at North Fork Trail #3666?

No parking area is mapped within 1.5 km of this route in OpenStreetMap. That is not the same as there being none — check local access rules before you go.

Can you bike North Fork Trail #3666?

Bicycle access is conditional, according to OpenStreetMap contributors. Legal access and how rideable the surface actually is are tracked separately on this page.

Trail data last updated August 2, 2026 · terrain computed July 30, 2026