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Duodenum

Moderate · Ace

Deschutes National Forest, Oregon

Directions

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4.8 km3.0 mi

Distance

156 m512 ft

Elevation gain

1h 20m

Est. time

Route

Route type

What to expect on this trail

  • Natural surface
  • Moderate climbs
  • Rolling
  • Hiking
  • Running
  • Biking
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 13.4% grade, which is steady work rather than scrambling. Source: DEM terrain profile, moderate confidence.
Rollingestimated
The grade varies by 9.1 percentage points along the route rather than climbing steadily. Source: DEM terrain profile, moderate confidence.

Biking is listed because the access rules record an explicit permission — see the bike section below for its authority. It is never inferred from the terrain.

Ace's Active Trek A real workout with honest climbing — pack water and snacks.

About this trail

Duodenum is a 4.8 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

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Elevation profile

Terrain sampled every 35 m from public elevation data.

Descent
121 m
High point
1577 m
90th percentile grade
13.4%
1577 m1517 m1456 m0 m2.3 km4.5 km

Bike access & suitability

Legal permission and physical difficulty are evaluated separately.

Bikes allowed

Legal access

allowed

Every imported segment carries an explicit bicycle permission.

Estimated MTB suitability

Difficult

53% confidence - score 51/100

  • - Terrain: 13.4% 90th-percentile grade and 32 m climbing per km.
  • - Surface: dirt.

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

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Frequently asked

How long is Duodenum?

Duodenum is 4.8 km (3.0 miles) as a route. Allow roughly 1h 20m at a steady walking pace, not counting stops.

How hard is Duodenum?

OpenTrail rates it moderate. It climbs about 156 m overall, and its steepest sustained stretches run around 13%.

Where is Duodenum?

Duodenum is in Deschutes National Forest, Oregon. The map on this page shows the full route, where it starts, and any mapped parking nearby.

Is there parking at Duodenum?

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 Duodenum?

Bicycles are permitted, 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