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Alaska trails · Tutka Backdoor Trail

Tutka Backdoor Trail

A 20.7-mile point-to-point in Alaska, with 2,298 ft of climbing. Managed by State of Alaska, Dept. of Natural Resources.

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Length
20.7 mi
Elevation gain
2,298 ft
Difficulty
Expert
Max grade
57%
Steepest mile
+1,325 ft
Tread at ≥10% grade
9.5 mi
Shape
point-to-point
Surface
Ground
Managed by
State of Alaska, Dept. of Natural Resources

Elevation profile

10 – 2,301 ft135791113151719

Most of the climbing sits in the first third — 64% of the ascent, between mile 0.0 and mile 6.9. It gives back about 5,493 ft along the way, so it rolls rather than climbing steadily.

3-D terrain

3-D terrain view of Tutka Backdoor Trail

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5

Heads up

Stream ford: expect at least one unbridged crossing.

Daylight at the trailhead

On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:14 a.m., the sun rises at 6:58 a.m. and sets at 9:08 p.m., and the last usable light fades about 9:52 p.m. (AKDT) — 14 h 10 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 20.7-mile route takes roughly 8 h 48 min, so leaving the trailhead at sunrise puts you back around 3:46 p.m. — 5 h 22 min before sunset.

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