OpenTrail

National Forest Development Road 3664

Moderate · Ace

Fremont-Winema National Forest, Oregon

Directions

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3.2 km2.0 mi

Distance

276 m906 ft

Elevation gain

1h 10m

Est. time

Route

Route type

What to expect on this trail

  • Gravel
  • Moderate climbs
  • Sustained climb
  • Hiking
  • Running
How these were worked out
Gravelrecorded
OpenStreetMap records the surface of this trail as "gravel". Source: OpenStreetMap, high confidence.
Moderate climbsestimated
Nine tenths of this trail is at or below a 12.9% grade, which is steady work rather than scrambling. Source: DEM terrain profile, moderate confidence.
Sustained climbestimated
This trail gains 86 m of elevation per kilometre. 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.

Ace's Active Trek A real workout with honest climbing — pack water and snacks.

About this trail

National Forest Development Road 3664 is a 3.2 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
0 m
High point
1692 m
90th percentile grade
12.9%
1692 m1553 m1413 m0 m1.6 km3.2 km

Bike access & suitability

Legal permission and physical difficulty are evaluated separately.

Bike access unknown

Legal access

Confirm before riding

No authoritative or explicit bicycle-access rule is recorded for this trail.

Estimated MTB suitability

Moderate

53% confidence - score 47/100

  • - Terrain: 12.9% 90th-percentile grade and 86 m climbing per km.
  • - Surface: gravel.

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

Trails nearby

Other routes within about 15 km.

Photos

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Frequently asked

How long is National Forest Development Road 3664?

National Forest Development Road 3664 is 3.2 km (2.0 miles) as a route. Allow roughly 1h 10m at a steady walking pace, not counting stops.

How hard is National Forest Development Road 3664?

OpenTrail rates it moderate. It climbs about 276 m overall, and its steepest sustained stretches run around 13%.

Where is National Forest Development Road 3664?

National Forest Development Road 3664 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 3664?

One mapped parking area sits within 1.5 km of the route. Parking comes from OpenStreetMap, so check the signage when you arrive.

Trail data last updated August 2, 2026 · terrain computed July 30, 2026