Forest Road 1643
Hard · IvyMalheur National Forest, Oregon
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Add the first10.3 km6.4 mi
Distance
155 m509 ft
Elevation gain
2h 35m
Est. time
Route
Route type
What to expect on this trail
- Gently graded
- Rough underfoot
- Hiking
How these were worked out
- Gently gradedestimated
- Nine tenths of this trail is at or below a 7.1% grade, so the climbing is easy going throughout. Source: DEM terrain profile, high confidence.
- Rough underfootestimated
- OpenStreetMap records track type "grade4" 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
Forest Road 1643 is a 10.3 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
- 73 m
- High point
- 1669 m
- 90th percentile grade
- 7.1%
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
Moderate
47% confidence - score 36/100
- - Terrain: 7.1% 90th-percentile grade and 15 m climbing per km.
- - Track firmness: grade4.
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.
- Forest Road 13215.8 km · 9.8 mi · Malheur National ForestHard · Ivy
- Forest Road 165112.0 km · 7.4 mi · Malheur National ForestHard · Ivy
- Forest Road 9082.0 km · 1.2 mi · Malheur National ForestEasy · Fern
- Forest Road 1221.9 km · 1.2 mi · Malheur National ForestEasy · Fern
- Twin Springs Road1.6 km · 1.0 mi · Malheur National ForestEasy · Fern
Trails nearby
Other routes within about 15 km.
Photos
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Frequently asked
How long is Forest Road 1643?
Forest Road 1643 is 10.3 km (6.4 miles) as a route. Allow roughly 2h 35m at a steady walking pace, not counting stops.
How hard is Forest Road 1643?
OpenTrail rates it hard. It climbs about 155 m overall, and its steepest sustained stretches run around 7%.
Where is Forest Road 1643?
Forest Road 1643 is in Malheur National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at Forest Road 1643?
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.