National Forest Development Road 4605
Hard · IvyWallowa-Whitman National Forest, Oregon
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Add the first11.6 km7.2 mi
Distance
346 m1135 ft
Elevation gain
3h 10m
Est. time
Route
Route type
What to expect on this trail
- Moderate climbs
- Rough underfoot
- Hiking
How these were worked out
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 11.2% grade, which is steady work rather than scrambling. Source: DEM terrain profile, high confidence.
- Rough underfootestimated
- OpenStreetMap records track type "grade5" on this trail. Source: OpenStreetMap, 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
National Forest Development Road 4605 is a 11.6 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
- 161 m
- High point
- 1484 m
- 90th percentile grade
- 11.2%
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
Difficult
47% confidence - score 53/100
- - Terrain: 11.2% 90th-percentile grade and 30 m climbing per km.
- - Track firmness: grade5.
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.
Photos
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Frequently asked
How long is National Forest Development Road 4605?
National Forest Development Road 4605 is 11.6 km (7.2 miles) as a route. Allow roughly 3h 10m at a steady walking pace, not counting stops.
How hard is National Forest Development Road 4605?
OpenTrail rates it hard. It climbs about 346 m overall, and its steepest sustained stretches run around 11%.
Where is National Forest Development Road 4605?
National Forest Development Road 4605 is in Wallowa-Whitman 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 4605?
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.