Route 4 (Japan)
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| Kokudō Yongō (国道4号?) | |
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| Route information | |
| Length: | 743.6 km (462.1 mi) |
| Major junctions | |
| South end: |
  National Route 1 / National Route 15 in Nihonbashi, Chūō-ku, Tokyo |
| North end: |
 National Route 7 in Aomori, Aomori |
| Highway system | |
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National highways of Japan Expressways of Japan |
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National Route 4 (国道4号 Kokudō Yongō?) is a major highway in eastern Honshu, Japan. It is the longest highway in Japan at 743.6 km (462.1 mi), and it connects Tokyo and Aomori via Utsunomiya, Kōriyama and Morioka.
From Saitama Prefecture to Iwate Prefecture, it parallels the Tōhoku Expressway; from Morioka to Hachinohe, it parallels the Hachinohe Expressway. At its northern end point, it links with Route 7.
4 December 1952: First Class National Highway 4 (from Tokyo to Aomori)
1 April 1965: General National Highway 4 (from Tokyo to Aomori)
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Wikipedia