Hokkaido Mountain Passes

OkhotskRoute 239Preventive closure section

Tenpoku Pass (Route 239)about 305 m

Nishiokoppe Village and Shimokawa Town, Hokkaido ・ 天北峠（てんぽくとうげ）

Around Tenpoku Pass (Route 239)3D view built from GSI elevation data and recent aerial imagery. The orange line is Route 239. Use the buttons at top left to view from the north, east, south or west, or drag to rotate. On phones, move two fingers up or down to tilt, and pinch to zoom.

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GSI Tiles (elevation tiles, seamless aerial photos), processed by this site. Road lines: © OpenStreetMap contributors.

Check if the road is open

Closures and road conditions change by the hour. Check official road information before you set off. These sites are in Japanese; your browser's translation feature helps.

Tenpoku Pass (Route 239) is in a "preventive closure section": when exceptionally heavy snow or a blizzard is forecast, the national government closes the road in advance. The section is 6.8 km long (MLIT list, in Japanese).

Pass data

Elevation
about 305 m#24 of 31 by heightHighest point of the road near the pass (excluding tunnels and bridges) in GSI elevation tiles (10 m mesh).
Road
National Route 239
Location
Nishiokoppe Village and Shimokawa Town, HokkaidoMunicipalities of the pass and within 300 m of it (GSI reverse geocoder).
Preventive closure in heavy snow
Yes (6.8 km section)

The pass is placed on the road at the point nearest to its name label on GSI Maps. Checked: 2026-11-03

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This page is not a driving guide. In winter, weather and road surfaces on mountain passes change quickly. Check the latest road and weather information, and do not push on in bad conditions.

Weather at Tenpoku Pass (Route 239)

Sunrise and sunset

SUNRISE--:--
SUNSET--:--

Today's times (Japan time) calculated for the pass's latitude and longitude against a sea-level horizon. Surrounded by mountains, the pass gets sunlight later and loses it earlier than these times.

Japan Meteorological Agency pages

Nearby passes

Nearby roadside stations

Nearby mountains

Straight-line distances from the pass.