Mill Hill Loop
Moderate · AceWilliam L. Finley National Wildlife Refuge, Oregon
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Add the first3.8 km2.4 mi
Distance
52 m171 ft
Elevation gain
55m
Est. time
Route
Route type
- No bicycles
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 "dirt". Source: OpenStreetMap, high confidence.
- Moderate climbsestimated
- Nine tenths of this trail is at or below a 9.3% grade, which is steady work rather than scrambling. 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
Mill Hill Loop is a 3.8 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
- 59 m
- High point
- 140 m
- 90th percentile grade
- 9.3%
Bike access & suitability
Legal permission and physical difficulty are evaluated separately.
Legal access
prohibited
OpenStreetMap explicitly marks bicycle access as prohibited on at least one segment.
Estimated MTB suitability
Moderate
53% confidence - score 41/100
- - Terrain: 9.3% 90th-percentile grade and 14 m climbing per km.
- - Surface: dirt.
Source: Explicit OpenStreetMap access tags - OpenStreetMap contributors - checked Aug 2, 2026 - rules v2
View access evidencePosted 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.
- 450 m away
Woodpecker Loop
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
1.78 km · 25m · ↑ 34 m
- 450 m away
Woodpecker Loop Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
1.78 km · 25m · ↑ 33 m
- 500 m away
Beaver Pond Trail
Moderate · AceWilliam L. Finley National Wildlife Refuge, Oregon
1.86 km · 25m · ↑ 21 m
- 1.2 km away
Cattail Pond Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
2.61 km · 35m · ↑ 0 m
- 1.5 km away
Pigeon Butte Trail
Moderate · AceWilliam L. Finley National Wildlife Refuge, Oregon
3.86 km · 50m · ↑ 6 m
- 1.8 km away
Homer Campbell Memorial Boardwalk
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
570 m · 10m · ↑ 0 m
- 1.8 km away
Photo Blind Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
722 m · 10m · ↑ 0 m
- 3.1 km away
McFadden Marsh Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
2.15 km · 30m · ↑ 0 m
- 3.1 km away
Cheadle Marsh Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
1.46 km · 20m · ↑ 6 m
- 9.8 km away
Drop Zone
Easy · FernOregon
1.27 km · 15m · ↑ 0 m
- 10.3 km away
Snag Boat Bend Loop Trail
Easy · FernWilliam L. Finley National Wildlife Refuge, Oregon
1.53 km · 20m · ↑ 0 m
- 10.5 km away
Boundary Trail
Moderate · AceOregon
3.31 km · 55m · ↑ 89 m
Photos
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Frequently asked
How long is Mill Hill Loop?
Mill Hill Loop is 3.8 km (2.4 miles) as a route. Allow roughly 55m at a steady walking pace, not counting stops.
How hard is Mill Hill Loop?
OpenTrail rates it moderate. It climbs about 52 m overall, and its steepest sustained stretches run around 9%.
Where is Mill Hill Loop?
Mill Hill Loop is in William L. Finley National Wildlife Refuge, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at Mill Hill 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.
Can you bike Mill Hill Loop?
Bicycles are not permitted, according to OpenStreetMap contributors. Legal access and how rideable the surface actually is are tracked separately on this page.