United States Forest Service Road 8503
Moderate · AceSiuslaw National Forest, Oregon
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Add the first3.9 km2.4 mi
Distance
339 m1112 ft
Elevation gain
1h 25m
Est. time
Route
Route type
What to expect on this trail
- Gravel
- Steep
- Sustained climb
- Hiking
How these were worked out
- Gravelrecorded
- OpenStreetMap records the surface of this trail as "gravel". Source: OpenStreetMap, high confidence.
- Steepestimated
- Nine tenths of this trail is at or below a 24.0% grade, and its steepest climb reaches 40.0%. 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
United States Forest Service Road 8503 is a 3.9 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
- 86 m
- High point
- 357 m
- 90th percentile grade
- 24.0%
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
65% confidence - score 72/100
- - Terrain: 24.0% 90th-percentile grade and 86 m climbing per km.
- - Surface: gravel.
- - Track firmness: grade2.
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 United States Forest Service Road 8503?
United States Forest Service Road 8503 is 3.9 km (2.4 miles) as a route. Allow roughly 1h 25m at a steady walking pace, not counting stops.
How hard is United States Forest Service Road 8503?
OpenTrail rates it moderate. It climbs about 339 m overall, and its steepest sustained stretches run around 24%.
Where is United States Forest Service Road 8503?
United States Forest Service Road 8503 is in Siuslaw National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at United States Forest Service Road 8503?
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.