Nan'ao Historic Trail | Yilan Attraction

Nan'ao Historic Trail is approximately 14 km long. It was the historic route used by Han settlers during the Qing dynasty to enter the Nan'ao basin; during the Japanese colonial period it was improved into a policing patrol road and remained in use after the war. The trail traverses the pristine broadleaf forest of the Nan'ao River valley, requiring multiple river crossings along the way. The ecology is well preserved, but this also means the demands on stamina and preparation are higher than for a typical suburban trail. A mountain entry permit is required before entering.

Highlights of Nan'ao Historic Trail

The trail follows the Nan'ao River upstream; the vegetation along the way belongs to low- to mid-elevation broadleaf forest with high species diversity. Large ferns, vines, and epiphytic orchids are widely distributed. Some sections of the trail follow historic road remnants; stone-piled embankments and the foundations of former police post buildings are still identifiable — physical remnants for understanding Japanese-era mountain management policy. The Nan'ao River valley has exceptionally clear water and abundant fish; in undisturbed sections, native species such as the Taiwan barbel and grouper can be seen.

The full round trip is about 28 km; walking the entire length requires an overnight camp. Most visitors choose to turn back after 6 to 7 km for a half-day hike. The trail crosses the Nan'ao River multiple times; during high-water season, stream levels can be high, making crossings quite challenging. Check recent rainfall conditions before setting out. In the dry autumn-winter season, stream levels are lower and crossings are relatively easier, but mountain temperatures also drop — bring warm clothing.

How to make the most of your visit

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Apply for the mountain entry permit well in advanceThe entire Nan'ao Historic Trail lies within a mountain restricted zone; you must apply for a mountain entry permit from the National Police Agency before entering. Applications can be submitted online; it is recommended to complete the process at least one week in advance.

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Check recent rainfall before river crossingsThe trail crosses the Nan'ao River multiple times; after a typhoon or heavy rain, the river can swell dangerously. Check the rainfall total and stream conditions for the preceding 3 days before departure.

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Stamina and gear must match the trail gradeAt 14 km plus the difficulty of river crossings, this is a moderately high-grade trail. It is recommended to have experience with suburban mountain hikes before attempting it; bring creek-wading shoes and sufficient supplies.

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Full-length overnight requires a camping planIf you plan to walk the full 14 km, bring overnight gear, identify suitable camp sites, and confirm that camping will not disturb wildlife habitats.

Practical information

Getting there and travel time

Drive along the Suhua Highway to Nan'ao Village, Nan'ao Township; the trailhead is beside the Nan'ao River. Confirm road conditions in Nan'ao town center before proceeding.
The Taiwan Railways goes to Nan'ao Station, but a taxi is still needed from the station to the trailhead (about 10 to 15 minutes); there is no public transport connection.

Nearby connections

Chaoyang National Trail is in Chaoyang Village, Nan'ao Township, about 10 to 15 minutes by car from Nan'ao town center; it can be included in the same day or same trip.
Nan'ao town center has a small number of local dining options; it is recommended to arrange supplies before heading out as there are no commercial facilities in the mountains.

Sources: Forestry Bureau trail information; Wikipedia entry on 'Nan'ao Historic Trail.' Photos to be replaced with Dio's own shots.

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