National Forest Development Road 3640
Hard · IvyFremont-Winema National Forest, Oregon
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Add the first9.7 km6.0 mi
Distance
237 m778 ft
Elevation gain
2h 35m
Est. time
Route
Route type
- Parking nearby
What to expect on this trail
- Natural surface
- Moderate climbs
- Hiking
- Running
How these were worked out
- Natural surfacerecorded
- OpenStreetMap records the surface of this trail as "unpaved". Source: OpenStreetMap, high confidence.
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 8.8% 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 3640 is a 9.7 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
- 115 m
- High point
- 1747 m
- 90th percentile grade
- 8.8%
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
53% confidence - score 39/100
- - Terrain: 8.8% 90th-percentile grade and 25 m climbing per km.
- - Surface: unpaved.
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.
- High Lakes Trail #620014.5 km · 9.0 mi · Fremont-Winema National ForestHard · Ivy
- National Forest Development Road 7006.2 km · 3.8 mi · Rogue River-Siskiyou National ForestModerate · Ace
- Brown Mountain North Trail #37244.4 km · 2.8 mi · Fremont-Winema National ForestModerate · Ace
- Brown Mountain North Trail #37243.6 km · 2.3 mi · Fremont-Winema National ForestModerate · Ace
Trails nearby
Other routes within about 15 km.
- 1.1 km away
Rye Spur Trail
Hard · IvyFremont-Winema National Forest, Oregon
9.72 km · 2h 25m · ↑ 166 m
- 1.3 km away
Campground Shorefront Trail
Easy · FernFremont-Winema National Forest, Oregon
2.70 km · 35m · ↑ 0 m
- 2.7 km away
Upper Canal Nordic Trail
Hard · IvyFremont-Winema National Forest, Oregon
11.07 km · 2h 30m · ↑ 33 m
- 2.7 km away
Big Mac Nordic
Easy · FernFremont-Winema National Forest, Oregon
1.76 km · 30m · ↑ 56 m
- 3.1 km away
Brown Mountain Trail #1005
Hard · IvyRogue River-Siskiyou National Forest, Oregon
15.48 km · 3h 35m · ↑ 110 m
- 3.4 km away
Mountain Lakes Trail
Hard · IvyMountain Lakes Wilderness, Oregon
8.23 km · 1h 50m · ↑ 25 m
- 4.5 km away
Mt. McLoughlin Trail
Moderate · AceSky Lakes Wilderness, Oregon
6.92 km · 3h 30m · ↑ 1179 m
- 4.5 km away
PCT - Oregon Section C
Hard · IvySky Lakes Wilderness, Oregon
118.74 km · 30h 20m · ↑ 2361 m
- 4.6 km away
PCT - Oregon Section B
Hard · IvyOregon
87.08 km · 23h 5m · ↑ 2223 m
- 4.6 km away
Mount McLoughlin Trail
Moderate · AceSky Lakes Wilderness, Oregon
6.16 km · 3h 15m · ↑ 1135 m
- 5.0 km away
High Lakes Trail #6200
Easy · FernRogue River-Siskiyou National Forest, Oregon
1.70 km · 25m · ↑ 13 m
- 6.1 km away
Bull Swamp Trail
Easy · FernFremont-Winema National Forest, Oregon
679 m · 10m · ↑ 0 m
Photos
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Frequently asked
How long is National Forest Development Road 3640?
National Forest Development Road 3640 is 9.7 km (6.0 miles) as a route. Allow roughly 2h 35m at a steady walking pace, not counting stops.
How hard is National Forest Development Road 3640?
OpenTrail rates it hard. It climbs about 237 m overall, and its steepest sustained stretches run around 9%.
Where is National Forest Development Road 3640?
National Forest Development Road 3640 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 3640?
One mapped parking area sits within 1.5 km of the route, the nearest being Brown Mountain Intermediate Trailhead. Parking comes from OpenStreetMap, so check the signage when you arrive.