O Black Mainline
Hard · IvyOregon
No photos yet
Add the first9.2 km5.7 mi
Distance
54 m177 ft
Elevation gain
2h 10m
Est. time
Route
Route type
What to expect on this trail
- Moderate climbs
- Hiking
- Running
How these were worked out
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 9.9% 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
O Black Mainline is a 9.2 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
Loading forecast…
Elevation profile
Terrain sampled every 35 m from public elevation data.
- Descent
- 248 m
- High point
- 321 m
- 90th percentile grade
- 9.9%
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
Easy
35% confidence - score 21/100
- - Terrain: 9.9% 90th-percentile grade and 6 m climbing per km.
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.
- 1.1 km away
Cedar Creek Mainline
Moderate · AceOregon
3.62 km · 1h 10m · ↑ 214 m
- 1.2 km away
Enterprise 272
Moderate · AceOregon
4.01 km · 1h 10m · ↑ 181 m
- 7.5 km away
muddy abandoned track
Easy · FernOregon
568 m · 10m · ↑ 23 m
- 9.2 km away
Crown Zellerbach Trail
Hard · IvyOregon
35.02 km · 8h 25m · ↑ 361 m
- 9.5 km away
Pebble Creek Mainline
Hard · IvyOregon
15.52 km · 3h 45m · ↑ 161 m
- 10.6 km away
Banks-Vernonia Trail
Hard · IvyL.L. Stub Stewart State Park, Oregon
36.41 km · 8h 40m · ↑ 343 m
- 10.7 km away
Pebble Creek Mainline (washed out)
Easy · FernOregon
1.17 km · 20m · ↑ 34 m
- 10.8 km away
Banks-Vernonia State Trail
Hard · IvyOregon
33.39 km · 8h 0m · ↑ 343 m
- 10.8 km away
Coates South Mnln
Easy · FernOregon
625 m · 10m · ↑ 38 m
- 13.2 km away
Scaponia Park
Easy · FernScaponia Park, Oregon
543 m · 10m · ↑ 24 m
- 14.8 km away
Coal Creek Mainline
Moderate · AceOregon
6.07 km · 1h 20m · ↑ 12 m
Photos
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Frequently asked
How long is O Black Mainline?
O Black Mainline is 9.2 km (5.7 miles) as a route. Allow roughly 2h 10m at a steady walking pace, not counting stops.
How hard is O Black Mainline?
OpenTrail rates it hard. It climbs about 54 m overall, and its steepest sustained stretches run around 10%.
Where is O Black Mainline?
O Black Mainline is in Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at O Black Mainline?
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.