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|---|---|---|---|---|
| 国道204号 | ||||
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| Route information | ||||
| Length | 157 km[1] (98 mi) | |||
| Existed | 18 May 1953–present | |||
| Major junctions | ||||
| North end |  National Route 202 in Karatsu | |||
| South end |  National Route 35 in Sasebo | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 204 is a national highway of Japan connecting Karatsu and Sasebo in Japan, with a total length of 157 km (97.56 mi).
- ^ "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 18 February 2020.