Tokyo Marathon's 7-hour limit runs on gun time, not your chip

Two ends of the city, fifteen minutes apart

Tokyo starts at the Metropolitan Government Building in Shinjuku and finishes at Tokyo Station, on Gyoko-dori Avenue. In a straight line that is about five kilometres; on the Marunouchi line it is roughly fifteen minutes. The course in between takes a long loop north and east: Suidobashi, Ueno-hirokoji, Kanda, Nihombashi, the Kaminarimon Gate at Asakusa, Ryogoku, Monzen-nakacho, Ginza, Tamachi, Hibiya — before returning to the imperial palace side of the station.

That geometry makes Tokyo one of the more forgiving majors for accommodation. The two ends of your day are close enough that neither choice is wrong, and the rail network between them is the best in the world. What is less forgiving, and much less discussed, is how the clock works.

The clock starts when the gun goes, not when you do

The organiser states it plainly: the official time will be measured from the starting gun. The limit is seven hours, from a 9:10am start, with the race closing at 4:10pm.

In a field of thirty-eight thousand runners, the gap between the gun and the moment a later block actually crosses the timing mat can be considerable. At races that use chip time, that gap costs you nothing. At Tokyo it comes directly out of your seven hours.

For a fast runner this is irrelevant. For anyone whose realistic finishing time is above six hours, it is the single most important operational fact about the race, and it should shape where you sleep. Every minute you save on race morning is a minute you keep at the other end, and the cleanest way to save minutes is to walk to the start rather than take a train to it.

The course cut-offs are real, and deliberately unspecified

Beyond the overall limit, the organiser operates cut-off points along the route “for traffic control, security, and race operations”, and states that participants who fail to reach one by the designated time, or who fall significantly behind the race pace at any point, may be required to discontinue.

That second clause is unusually broad, and it is worth reading carefully. It is not simply a matter of hitting fixed gates; the organiser reserves the ability to remove runners who are drifting off pace anywhere on the course. The specific points are published in participant materials closer to the event.

Combined with gun-time scoring, this makes Tokyo stricter than its late start and flat course suggest.

The expo is not optional

Race pack collection runs on Thursday 4 and Friday 5 March from 10:00 to 20:30, and Saturday 6 March from 10:00 to 17:30. There is no race-morning collection.

For an international runner this is a hard constraint on your travel dates rather than an errand. Arriving on the Saturday evening means you do not run. Arriving on the Saturday afternoon means a rush from the airport to the expo before it closes at half past five. Build it into your flights before you build it into your itinerary.

Where this leaves the accommodation decision

Shinjuku puts you within walking distance of the start. On a gun-time race that is worth more than it would be elsewhere: you eliminate the only timed journey of your day, and you arrive without having stood on a packed train. It also has the deepest hotel supply in Tokyo, which matters when thirty-eight thousand runners and their families are booking the same weekend. The cost is that you finish five kilometres east and travel back.

Marunouchi and the Tokyo Station area invert it. You walk back to your room from Gyoko-dori, which after a marathon is a genuine kindness, and you are on top of the best rail hub in Japan for whatever you are doing afterwards. The morning journey is about fifteen minutes on the Marunouchi or Chuo line — easy by any normal standard, though shared with a great many other runners.

Anywhere on the Marunouchi or Chuo line is the underrated option, and Tokyo’s network makes it genuinely viable in a way it would not be in most cities. Both ends of your day sit on the same line, with no changes in either direction, and prices fall away quickly once you are off the two terminus districts.

The honest summary is that Tokyo does not punish a wrong choice the way Boston or New York do. Pick the line rather than the landmark, and if the seven-hour limit is anywhere near your realistic finishing time, pick Shinjuku.

When to book

Entry is largely by lottery, with selection by random drawing where entries exceed the field size, and charity entry opening in the June before the race. Acceptances therefore land months ahead, and that, rather than the approach of March, is when the walkable rooms go.

Tokyo has enormous hotel stock and you are very unlikely to find nothing. What you will find, if you leave it late, is that what remains is neither near the start nor near the finish nor on the line between them, in a city large enough that this genuinely costs you an hour a day.

We measured the split, and it is 6.7 kilometres

The phrase “two ends of the city” deserves a number, so we geocoded both and measured them. The Tokyo Metropolitan Government Building in Shinjuku and the finish beside Tokyo Station are 6.71 kilometres apart.

Then the candidate districts, against both ends:

Zone	To the start (Shinjuku)	To the finish (Tokyo Stn)
Shinjuku	0.80 km	5.93 km
Marunouchi	6.84 km	0.13 km
Ginza	6.87 km	1.07 km

This is the cleanest example on the whole site of a race with no compromise position. Shinjuku puts you 800 metres from the start and six kilometres from the finish. Marunouchi puts you 130 metres from the finish and nearly seven from the start. There is no third option that splits the difference usefully, because the gap between them is filled with the Imperial Palace grounds and the densest rail interchange on earth — you cross it by train or not at all.

So Tokyo forces a genuine choice rather than offering a best answer, and the choice is between a calm morning and a calm afternoon. Given that the gun time is absolute and the finish is merely tiring, this page comes down on the side of the morning, but a runner who has done Tokyo before and knows how long the finish area takes to clear may reasonably decide the opposite.

The marathon does not move Tokyo’s hotel market at all

This is the most surprising measurement we took on any race, and it is worth reporting precisely because it contradicts what a guide is expected to say.

Checked on 4 August 2026, comparing race weekend with the following weekend:

	Race weekend 5–8 Mar 2027	Control 12–15 Mar 2027
Properties on Booking.com	5,633	5,856

Ninety-six per cent of ordinary supply was still available for race weekend. And the prices, for the same properties across the two weekends:

Property	Race weekend	Control	Multiple
Hotel Keihan Tokyo Yotsuya	¥64,491	¥61,372	1.05×
Tokyu Stay Yotsuya	¥92,473	¥91,910	1.01×
illi Enu Yotsuya	¥267,300	¥267,300	1.00×
Yotsuya Lantern	¥266,760	¥266,760	1.00×
Wakaba Hotel	¥269,692	¥269,692	1.00×
Tokyo Candle house	¥43,263	¥43,263	1.00×

Four of the six were priced identically, to the yen, on both weekends. The median multiple is 1.00.

Tokyo is a World Marathon Major with a field of around thirty-eight thousand, and on this evidence the city’s accommodation market does not notice it. Compare Valencia at roughly three times, Berlin at close to four, Chicago at 2.3, and Boston where the continuous race weekend could not be booked at all.

The explanation is scale. Tokyo has close to six thousand bookable properties. Thirty-eight thousand runners, most of them domestic and many commuting in for the day, are simply not a large enough shock to move that market.

What this changes for you: the urgency this site applies to Boston, Valencia and Berlin does not apply here. You are not racing anyone for a room and you are not paying a marathon surcharge. What you are choosing is position — the 6.7 kilometre problem above, and position is available late as well as early. Book for the right district rather than booking early for the wrong one.

That is the opposite of the advice in the section above this one, and the measurement is the reason. Where the section above says the walkable rooms go early, this data says the market as a whole does not tighten. Both can be true: the specific hotels closest to Shinjuku and Marunouchi thin out while the city’s five thousand other properties sit unaffected. Prioritise the district; do not panic about the city.