OpenTrail

Fort to Sea Trail

Hard · Ivy

Lewis and Clark National Historical Park, Oregon

Directions

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10.0 km6.2 mi

Distance

138 m453 ft

Elevation gain

2h 25m

Est. time

Route

Route type

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 "ground". Source: OpenStreetMap, high confidence.
Moderate climbsestimated
Nine tenths of this trail is at or below a 9.6% 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

Fort to Sea Trail is a 10.0 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
128 m
High point
100 m
90th percentile grade
9.6%
100 m52 m3 m0 m4.8 km9.6 km

Bike access & suitability

Legal permission and physical difficulty are evaluated separately.

Conditional access

Legal access

conditional

Bicycle permission is explicit on part of the route; remaining segments are undocumented.

Confirm access on undocumented segments before riding.

Estimated MTB suitability

Moderate

53% confidence - score 39/100

  • - Terrain: 9.6% 90th-percentile grade and 14 m climbing per km.
  • - Surface: ground.

Source: Explicit OpenStreetMap access tags - OpenStreetMap contributors - checked Aug 2, 2026 - rules v2

View access evidence

Posted signs and current land-manager closures always override OpenTrail.

Report incorrect bike access

Trails nearby

Other routes within about 15 km.

Photos

Location metadata is stripped from uploads automatically. New photos are reviewed by a moderator before they appear publicly.

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Reviews

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Frequently asked

How long is Fort to Sea Trail?

Fort to Sea Trail is 10.0 km (6.2 miles) as a route. Allow roughly 2h 25m at a steady walking pace, not counting stops.

How hard is Fort to Sea Trail?

OpenTrail rates it hard. It climbs about 138 m overall, and its steepest sustained stretches run around 10%.

Where is Fort to Sea Trail?

Fort 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 Fort to Sea Trail?

9 mapped parking areas sit within 1.5 km of the route. Parking comes from OpenStreetMap, so check the signage when you arrive.

Can you bike Fort to Sea Trail?

Bicycle access is conditional, according to OpenStreetMap contributors. Legal access and how rideable the surface actually is are tracked separately on this page.

Trail data last updated August 2, 2026 · terrain computed July 30, 2026