Overview

The Hibiya Line (H) links Kita-senju and Naka-meguro over roughly 20.3 km and 22 stations. Its understated silver-grey livery carries a huge share of commuter traffic just inside and outside the Yamanote loop.

Opened in stages through the mid-1960s in time for the Tokyo Olympics, it was the first Tokyo subway built for through-running from the start — trains continue onto the Tobu network at Kita-senju, which is why a "Hibiya Line" train can be found deep inside Saitama. It also runs unusually shallow through the city centre, so its platforms are among the quickest to reach from street level.

Along the route

The line passes through Ueno, Akihabara, Ginza, and Roppongi, running from the old downtown (shitamachi) to the fashionable streets of Naka-meguro — touching both the old and new sides of Tokyo in one ride. Through-service with the Tobu Isesaki Line at Kita-senju extends its reach far into Saitama.

The middle section is a tour of trades. Tsukiji was the fish market for eighty years; Kayabacho and Hatchobori are the securities district; Ningyocho was named for the doll-makers who worked there, and Kodemmacho for the horse-post station that stood there in the Edo period. Between Ginza and Akihabara the line runs through what is essentially a list of what people used to do for a living in this city.

Where the typing gets hard

Twenty-two stations, 197 keystrokes, an average of 9.0 per stop — one of the lightest averages among Tokyo's major lines, which makes this a good line for building speed rather than fighting it.

The catch is the ちょう cluster. Kamiyacho, Hatchobori, Kayabacho, Ningyocho and Kodemmacho are five 〜町 names, and four of them arrive consecutively between Hatchobori and Kodemmacho. Each needs a long-vowel chou ending, and after the third one your fingers start typing the ending before the stem is done.

Hatchobori (hacchoubori, 11) is the one that catches people: it is a sokuon and a long vowel in eleven characters, and it sits immediately after Tsukiji, one of the shortest names on the line. Roppongi (roppongi) is the other sokuon — easier, because everyone already knows how to spell it.

Two names tie for longest at 15: Naka-okachimachi (nakaokachimachi) and Toranomon Hills (toranomonhiruzu), the 2020 addition between Kamiyacho and Kasumigaseki and the only katakana name on the line. Naka-okachimachi is the crueller of the two, because it arrives one stop before Ueno (ueno, 4) — the biggest length drop on the line, fifteen keystrokes to four, back to back.

How to practise it

This is the line to run when you want to work on consistency rather than peak speed. The stations are evenly spaced, the names are mid-length, and there is no single monster to derail a good run — your time comes down almost entirely to how few mistakes you make.

Run it from Naka-meguro toward Kita-senju to take the ちょう cluster in the second half, or reverse it to hit that cluster cold, which is the better drill if long vowels are what you are trying to fix.

Why play it

Even station spacing and a balanced mix of station-name difficulty make it a solid line for building a steady, accurate typing rhythm.