Boston vs Tokyo: Which Is Harder to Get Into?

Published August 24, 2026 · Estimates, updated each registration cycle

Tokyo and Boston are the two majors with the least in common when it comes to getting a bib. Tokyo is a ballot at heart, so for most applicants entry is a draw and your finish time is irrelevant. Boston is a ranked queue, so entry is decided almost entirely by how fast you ran relative to your own age and gender standard. One is a lottery ticket, the other is a target. That difference matters more than any raw odds number, because only one of the two is something you can train toward.

How Tokyo decides

The general entry ballot is the main door. Recent editions have drawn on the order of three hundred thousand applications, and the reported success rate for the general draw has sat around one in ten. The 2027 race is the twentieth anniversary edition and the field has been expanded to roughly forty thousand, which helps at the margins but does not change the basic shape: far more people want in than there are places, and the sorting is random.

There are side doors. Charity entry exists and is expensive by major marathon standards. There is a semi elite route with genuinely fast standards, recently reported near 2:21 for men and 2:52 for women, and even those are capped, so meeting the time makes you eligible rather than accepted. Tokyo also asks general entrants who declare a predicted finish under three hours to upload proof, which surprises people, but that is a seeding and verification step rather than a qualifying gate. Treat every one of these figures as a guide and confirm the current rules on the official entry pages, because Tokyo adjusts them between editions.

How Boston decides

Boston has no ballot for its main qualifier field. You meet the standard for your age and gender, you apply during registration week, and the Boston Athletic Association ranks every applicant by buffer, meaning how far under your own standard you ran. The field fills from the biggest buffer down, and whatever the last accepted buffer turns out to be is published as that year's cutoff. Recent cycles needed 5:29, 6:51 and 4:34 under the standard. Our central estimate for the next cycle is about 5:15, give or take roughly 1:45, and that is our estimate rather than a BAA number. If the two step gate is new to you, start with why a qualifying time does not guarantee entry.

One wrinkle for the 2027 race: the BAA has added a random Boston Qualifier Selection that will pull roughly a thousand entrants from the pool of qualifiers who missed the cutoff. That is a small lottery bolted onto the side of a ranked system, not a change to how the field is mainly filled.

The direct comparison

Take a 38 year old woman. Boston asks her for 3:30, and with a cutoff near 5:15 she realistically needs about 3:24 to feel comfortable. That is a hard target, but it is a target: she can build a season around it, miss by ninety seconds, and come back next year knowing exactly what she is chasing. Tokyo asks her for nothing at all, and gives her about a one in ten chance each time she applies. Neither is easy, but only the Boston number responds to training.

Now take a 62 year old man. Boston asks 3:50, so roughly 3:44 once the cutoff is applied. Tokyo's semi elite route is still 2:21 for him, which is not a real option for almost anybody in that age bracket. Because Boston scales its standards with age and Tokyo does not scale its fast track at all, the older you are the more clearly Boston is the achievable earned entry and Tokyo is the coin flip. The same pattern shows up against Berlin, laid out in Boston vs Berlin.

What to actually do

Enter the Tokyo ballot. It costs you an application and a modest fee, the odds are what they are, and repeated entries over several years add up to a decent cumulative chance. Then treat Boston as the one you can control. Work out your buffer, decide how many minutes you still need to find, and build a season around a qualifier you can actually run well. The full ranking of the majors by difficulty of entry is in which major is hardest to get into.

To see where you stand on the Boston side, put your age, gender and marathon time into the cutoff predictor. It returns your buffer, an estimated chance for the next cycle, and the honest part that no forecast alone gives you: whether that same buffer would have been accepted in each of the last thirteen real Boston cycles.