North Fork Trail #3666
Hard · IvyWillamette National Forest, Oregon
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Add the first9.2 km5.7 mi
Distance
507 m1663 ft
Elevation gain
2h 55m
Est. time
Route
Route type
What to expect on this trail
- Steep
- Rolling
- Hiking
How these were worked out
- Steepestimated
- Nine tenths of this trail is at or below a 29.8% grade, and its steepest climb reaches 77.1%. Source: DEM terrain profile, high confidence.
- Rollingestimated
- The grade varies by 17.8 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 9.2 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
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Elevation profile
Terrain sampled every 35 m from public elevation data.
- Descent
- 428 m
- High point
- 497 m
- 90th percentile grade
- 29.8%
Bike access & suitability
Legal permission and physical difficulty are evaluated separately.
Legal access
Confirm before riding
Estimated MTB suitability
Moderate
35% confidence - score 50/100
- - Terrain: 29.8% 90th-percentile grade and 55 m climbing per km.
Source: No access source recorded - checked Aug 2, 2026 - rules v2
Posted signs and current land-manager closures always override OpenTrail.
Report incorrect bike access
Connecting trails
Trails whose path meets this one — plan a longer route or a loop.
Trails nearby
Other routes within about 15 km.
- 2.9 km away
Dead Mountain Trail
Hard · IvyWillamette National Forest, Oregon
9.27 km · 2h 10m · ↑ 46 m
- 4.8 km away
Alpine Trail #3450
Hard · IvyWillamette National Forest, Oregon
24.98 km · 8h 0m · ↑ 1449 m
- 5.6 km away
Tire Mountain Trail
Hard · IvyWillamette National Forest, Oregon
8.89 km · 2h 10m · ↑ 135 m
- 5.6 km away
Tire Mountain Trail #3485
Hard · IvyWillamette National Forest, Oregon
9.20 km · 2h 15m · ↑ 113 m
- 5.6 km away
Cloverpatch Tie Trail #3457.1
Easy · FernWillamette National Forest, Oregon
1.84 km · 25m · ↑ 14 m
- 5.9 km away
Salmon Creek Trail
Hard · IvyWillamette National Forest, Oregon
10.28 km · 2h 45m · ↑ 297 m
- 5.9 km away
Cloverpatch Extension
Moderate · AceWillamette National Forest, Oregon
6.63 km · 2h 0m · ↑ 293 m
- 6.8 km away
Aubrey Mountain Trail
Moderate · AceWillamette National Forest, Oregon
3.23 km · 1h 20m · ↑ 379 m
- 6.8 km away
Alpine Trail
Easy · FernWillamette National Forest, Oregon
1.35 km · 20m · ↑ 0 m
- 7.3 km away
Heckletooth
Hard · IvyWillamette National Forest, Oregon
10.97 km · 2h 55m · ↑ 270 m
- 7.6 km away
Larison Rock Trail #3607
Moderate · AceWillamette National Forest, Oregon
5.04 km · 1h 10m · ↑ 16 m
- 8.8 km away
Deception Butte Trail
Moderate · AceWillamette National Forest, Oregon
7.59 km · 3h 10m · ↑ 880 m
Photos
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Frequently asked
How long is North Fork Trail #3666?
North Fork Trail #3666 is 9.2 km (5.7 miles) as a route. Allow roughly 2h 55m at a steady walking pace, not counting stops.
How hard is North Fork Trail #3666?
OpenTrail rates it hard. It climbs about 507 m overall, and its steepest sustained stretches run around 30%.
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.