Izuhakone Railway Sunzu Line

Sunzu Line

3000 series train on the Izuhakone Sunzu Line
Type Commuter rail
Locale Tokai region
Termini Mishima
Stations 13
Opened 1898
Owner Izuhakone Railway
Line length 19.8 km (12.3 mi)
Number of tracks single
Track gauge 1,067 mm (3 ft 6 in)
Electrification 1,500 V DC overhead catenary
Sunzu Line

Gotemba Line


Tōkaidō Shinkansen

Tōkaidō Main Line

0.0 Mishima

1.3 Mishima-Hirokōji

←Izuhakone Railway Kidō Line (defunct)

2.0 Mishima-Tamachi
2.9 Mishima-Futsukamachi
Izuhakone Railway Daiba factory
5.5 Daiba
7.0 Izu-Nitta
8.5 Baraki
9.8 Nirayama
11.4 Izu-Nagaoka
14.2 Takyō
16.6 Ōhito
18.6 Makinokō
19.8 Shuzenji

The Izuhakone Railway Sunzu Line (伊豆箱根鉄道駿豆線 Izuhakone Tetsudō Sunzu-sen) is a commuter railway line of the Izuhakone Railway, a private railroad in Japan. The line connects Mishima Station in the city of Mishima with Shuzenji Station in the city of Izu, both within Shizuoka Prefecture. The name "Sunzu" comes from the former provinces of Suruga and Izu, although the line at present operates only within the borders of former Izu Province.


No. Station Japanese Distance (km) Between stations (km) Exp Transfers Location
IS01 Mishima 三島 0.0 - Tōkaidō Main Line
Tōkaidō Shinkansen
Mishima Shizuoka Prefecture
IS02 Mishima-Hirokōji 三島広小路 1.3 1.3  
IS03 Mishima-Tamachi 三島田町 2.0 0.7  
IS04 Mishima-Futsukamachi 三島二日町 2.9 0.9  
IS05 Daiba 大場 5.5 2.6  
IS06 Izu-Nitta 伊豆仁田 7.0 1.5   Kannami
IS07 Baraki 原木駅 8.5 1.5   Izunokuni
IS08 Nirayama 韮山 9.8 1.3  
IS09 Izu-Nagaoka 伊豆長岡 11.4 1.6  
IS10 Takyō 田京 14.2 2.8  
IS11 Ōhito 大仁 16.6 2.4  
IS12 Makinokō 牧之郷 18.6 2.0   Izu
IS13 Shuzenji 修善寺 19.8 1.2  


The Sunzu Line opened for operations on May 20, 1898, connecting Zuso-Mishima Station (present-day Mishima-Tamachi Station) with Nanjō Station (present-day Izu-Nagaoka Station). The terminus of the line was moved to Mishima Station (present day Shimo-Togari Station) on June 15, 1898, and the southern end of the line was extended to Ōhito Station on July 17, 1899.

The line became part of the Izu Railway (伊豆鉄道 Izu Tetsudō) on July 19, 1907, which in turn became the Sunzu Electric Railway (駿豆電気鉄道 Sunzu Denki Tetsudō) on April 1, 1912. This company merged with Fuji Hydroelectric (富士水電) in 1914, and was spun back out as the Sunzu Railway (駿豆鉄道 Sunzu Tetsudō) on November 5, 1917. The line was electrified by June 1919, and the southern terminus extended to Shuzenji Station on August 1, 1924. In May 1933, regularly scheduled weekend services to Tokyo Station began operation, but were later suspended during World War II. With the opening of the Tanna Tunnel in 1934 and the re-routing of the Tōkaidō Main Line, the Sunzu ceased operations at Shimotogari Station and its northern terminus became the new Mishima Station. A rail yard and train factory was completed at Daiba Station on June 10, 1937.

In 1949, the Japan National Railways began semi-express and limited-express train operations from Tokyo. The Sunzu Railway Company was acquired by the Izuhakone Railway on June 1, 1957. The line was upgraded from 600 V to 1,500 V on September 7, 1959. All freight operations were discontinued as of June 16, 1972. An ATS system was installed in December 1972 and a CTC system in 1985 (upgraded in 2007). As of March 2007, all stations were equipped with automatic wickets compatible with the PASMO Smart card system.


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