Slough to Sea Trail
Easy · FernLewis and Clark National Historical Park, Oregon
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Add the first2.1 km1.3 mi
Distance
44 m144 ft
Elevation gain
30m
Est. time
Route
Route type
- Dogs allowed
- No bicycles
- 4 parking areas
What to expect on this trail
- Steep
- Rolling
- Hiking
How these were worked out
- Steepestimated
- Nine tenths of this trail is at or below a 20.8% grade, and its steepest climb reaches 38.6%. Source: DEM terrain profile, moderate confidence.
- Rollingestimated
- The grade varies by 12.6 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.
Fern's Friendly Walk A gentle wander — great for kids, dogs, and wildflower stops.
About this trail
Slough to Sea Trail is a 2.1 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
- 97 m
- High point
- 62 m
- 90th percentile grade
- 20.8%
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
35% confidence - score 45/100
- - Terrain: 20.8% 90th-percentile grade and 21 m climbing per km.
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.
- 150 m away
Kwis Kwis Trail
Moderate · AceLewis and Clark National Historical Park, Oregon
3.25 km · 50m · ↑ 77 m
- 800 m away
Netul River Trail
Easy · FernLewis and Clark National Historical Park, Oregon
1.49 km · 20m · ↑ 0 m
- 3.1 km away
Airport Dike Trail
Easy · FernOregon
803 m · 10m · ↑ 0 m
- 3.2 km away
Skipanon River Trail
Easy · FernOregon
1.52 km · 20m · ↑ 0 m
- 3.7 km away
Bayfront Dike Trail
Easy · FernOregon
1.83 km · 25m · ↑ 0 m
- 4.0 km away
Skipanon River Loop Trail
Easy · FernOregon
1.71 km · 25m · ↑ 0 m
- 4.7 km away
Tank Drive
Easy · FernOregon
668 m · 10m · ↑ 0 m
- 4.8 km away
Warrenton Waterfront Trail
Moderate · AceOregon
3.26 km · 45m · ↑ 0 m
- 5.5 km away
DeLaura Dune Trail
Moderate · AceFort Stevens State Park, Oregon
7.23 km · 1h 35m · ↑ 0 m
- 6.2 km away
Freedom Trail
Easy · FernOregon
626 m · 10m · ↑ 0 m
- 6.3 km away
Astoria Riverwalk
Moderate · AceOregon
6.98 km · 1h 35m · ↑ 0 m
- 6.4 km away
Sleepy Hollow Trail
Easy · FernOregon
2.42 km · 30m · ↑ 0 m
Photos
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Frequently asked
How long is Slough to Sea Trail?
Slough to Sea Trail is 2.1 km (1.3 miles) as a route. Allow roughly 30m at a steady walking pace, not counting stops.
How hard is Slough to Sea Trail?
OpenTrail rates it easy. It climbs about 44 m overall, and its steepest sustained stretches run around 21%.
Where is Slough to Sea Trail?
Slough to Sea Trail is in Lewis and Clark National Historical Park, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.
Is there parking at Slough to Sea Trail?
4 mapped parking areas sit within 1.5 km of the route. Parking comes from OpenStreetMap, so check the signage when you arrive.
Are dogs allowed on Slough to Sea Trail?
Yes — Slough to Sea Trail is mapped as dog friendly. Posted signs and seasonal restrictions always take precedence.
Can you bike Slough to Sea Trail?
Bicycles are not permitted, according to OpenStreetMap contributors. Legal access and how rideable the surface actually is are tracked separately on this page.