The Ŭllyul Line is a non-electrified standard-gauge secondary line of the North Korean State Railway running from Ŭnp'a on the Hwanghae Ch'ŏngnyŏn Line to Ch'ŏlgwang on the Sŏhaekammun Line.A yellow background in the "Distance" box indicates that section of the line is not electrified; a pink background indicates that section is 2 ft 6 in (762 mm) narrow gauge; an orange background indicates that section is non-electrified narrow gauge.
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