Outer Loop
Moderate · AceMiller Woods Conservation Area, Oregon
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Add the first6.6 km4.1 mi
Distance
174 m571 ft
Elevation gain
1h 45m
Est. time
Loop
Route type
What to expect on this trail
- Natural surface
- Moderate climbs
- Rolling
- Hiking
- Running
How these were worked out
- Natural surfacerecorded
- OpenStreetMap records the surface of this trail as "dirt". Source: OpenStreetMap, high confidence.
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 14.4% grade, which is steady work rather than scrambling. Source: DEM terrain profile, moderate confidence.
- Rollingestimated
- The grade varies by 10.1 percentage points along the route rather than climbing steadily. 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
Outer Loop is a 6.6 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
- 178 m
- High point
- 196 m
- 90th percentile grade
- 14.4%
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
53% confidence - score 52/100
- - Terrain: 14.4% 90th-percentile grade and 26 m climbing per km.
- - Surface: dirt.
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.
- 4.6 km away
Westside Greenway
Easy · FernOregon
1.98 km · 30m · ↑ 11 m
- 8.4 km away
Joe Dancer Park Trail
Easy · FernJoe Dancer Park, Oregon
2.20 km · 30m · ↑ 6 m
- 11.4 km away
1.0 Mile Loop
Easy · FernGalen McBee Airport Park, Oregon
1.65 km · 20m · ↑ 0 m
- 13.8 km away
Northwest Old Railroad Grade
Moderate · AceOregon
5.20 km · 1h 25m · ↑ 174 m
Photos
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Frequently asked
How long is Outer Loop?
Outer Loop is 6.6 km (4.1 miles) as a loop. Allow roughly 1h 45m at a steady walking pace, not counting stops.
How hard is Outer Loop?
OpenTrail rates it moderate. It climbs about 174 m overall, and its steepest sustained stretches run around 14%.
Where is Outer Loop?
Outer Loop is in Miller Woods Conservation Area, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at Outer Loop?
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.