National Forest Development Road 331
Hard · IvyFremont-Winema National Forest, Oregon
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Add the first18.1 km11.2 mi
Distance
475 m1558 ft
Elevation gain
4h 50m
Est. time
Route
Route type
- Parking nearby
What to expect on this trail
- Moderate climbs
- Hiking
- Running
How these were worked out
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 8.6% grade, which is steady work rather than scrambling. Source: DEM terrain profile, high 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
National Forest Development Road 331 is a 18.1 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
- 105 m
- High point
- 2259 m
- 90th percentile grade
- 8.6%
Bike access & suitability
Legal permission and physical difficulty are evaluated separately.
Legal access
Confirm before riding
No authoritative or explicit bicycle-access rule is recorded for this trail.
Estimated MTB suitability
Easy
35% confidence - score 20/100
- - Terrain: 8.6% 90th-percentile grade and 26 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.
- 700 m away
Fremont National Recreation Trail
Hard · IvyFremont-Winema National Forest, Oregon
88.24 km · 23h 25m · ↑ 2263 m
- 2.1 km away
Hanan Trail
Hard · IvyFremont-Winema National Forest, Oregon
11.55 km · 3h 0m · ↑ 250 m
- 7.5 km away
Road 209
Easy · FernFremont-Winema National Forest, Oregon
921 m · 10m · ↑ 0 m
- 8.1 km away
Road 447
Moderate · AceFremont-Winema National Forest, Oregon
3.56 km · 45m · ↑ 0 m
- 9.6 km away
Road 178
Moderate · AceFremont-Winema National Forest, Oregon
3.56 km · 1h 0m · ↑ 104 m
- 9.7 km away
Road 038
Easy · FernFremont-Winema National Forest, Oregon
1.87 km · 35m · ↑ 120 m
- 9.9 km away
Road 177
Easy · FernFremont-Winema National Forest, Oregon
2.90 km · 40m · ↑ 25 m
- 10.1 km away
Chipmunk Lane
Easy · FernFremont-Winema National Forest, Oregon
1.70 km · 25m · ↑ 27 m
- 10.4 km away
Silvertip Lane
Easy · FernFremont-Winema National Forest, Oregon
783 m · 15m · ↑ 68 m
- 10.4 km away
Oak Lane
Easy · FernFremont-Winema National Forest, Oregon
777 m · 15m · ↑ 65 m
- 10.5 km away
Alder Lane
Easy · FernFremont-Winema National Forest, Oregon
781 m · 20m · ↑ 71 m
- 10.6 km away
Birch Lane
Easy · FernFremont-Winema National Forest, Oregon
758 m · 10m · ↑ 0 m
Photos
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Frequently asked
How long is National Forest Development Road 331?
National Forest Development Road 331 is 18.1 km (11.2 miles) as a route. Allow roughly 4h 50m at a steady walking pace, not counting stops.
How hard is National Forest Development Road 331?
OpenTrail rates it hard. It climbs about 475 m overall, and its steepest sustained stretches run around 9%.
Where is National Forest Development Road 331?
National Forest Development Road 331 is in Fremont-Winema National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at National Forest Development Road 331?
One mapped parking area sits within 1.5 km of the route, the nearest being Bear Creek Trailhead. Parking comes from OpenStreetMap, so check the signage when you arrive.