Boston vs Sydney: Which Is Harder to Get In?

Published August 26, 2026 · Estimates, updated each registration cycle

Sydney is the newest race in the World Marathon Majors series, and that youth is the whole story. It has not had decades to build a queue of people waiting their turn, its guaranteed entry doors are still wide open, and its time standards are published rather than implied by a moving cutoff. For a runner who is close to a Boston qualifying time, Sydney is currently the most winnable major on the calendar. Boston, by contrast, has one door, a long line behind it, and a number that changes every year.

How Sydney decides

The public ballot is the default route and it is free to enter. For the 2027 edition the ballot was scheduled to open in late September 2026 and close in mid October 2026, which is about a week after Boston's own qualifier registration week closes. Sydney has not published a guaranteed success rate, and as the race's profile rises the odds will get worse, but the pool is nothing like the 240,000 that New York now draws. Entering costs you nothing but a form.

The more interesting door for readers of this site is the time route, run as the High Performance Programme. Meet the published standard for your age and gender on an AIMS certified course inside a trailing qualifying window, recently listed as fifteen months, and you get a guaranteed place rather than a ticket in a draw. The open men's standard has been listed near 2:53, with the brackets easing with age and the women's standards correspondingly slower. Confirm the current table on the official race pages before you plan around it, because a race this new revises its entry rules between editions. Alongside those two there are charity places at a fundraising minimum in the region of three thousand Australian dollars, official travel partner packages that bundle a bib with accommodation, and a legacy style scheme for runners who raced Sydney during its candidacy years.

How Boston decides

Boston runs a single ranked queue. Meet the standard for your age and gender on a certified course inside the qualifying window, apply during registration week, and the Boston Athletic Association sorts every applicant by buffer, meaning how far under your own standard you ran. The field fills from the largest buffer downward, and the last accepted buffer becomes that year's published cutoff. The last three 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 figure. New for 2027, roughly a thousand places go to a random selection among qualifiers who applied but did not beat the cutoff, which softens the edge of the queue without changing its logic. If the two step gate is new to you, start with why a qualifying time does not guarantee entry.

The same runner, both races

Take a 38 year old man who has run 2:58. Boston asks 3:00 in his bracket, so his buffer is two minutes, which against an estimated cutoff near 5:15 leaves him well short and dependent on the random draw. Sydney's open standard sits near 2:53, and his age bracket eases that, so on the published table he is very likely a guaranteed entry. One performance, two completely different outcomes. Now take a 52 year old woman who has run 3:55. Boston asks 3:50, so she has not qualified at all and has no route in beyond charity. Sydney's ballot treats her exactly like everyone else, and her age graded standard may well be within reach. The pattern holds across the brackets: Sydney rewards a published number, Boston rewards being faster than the people who applied at the same time as you.

What to do with this

Enter the Sydney ballot the year it opens, because it is free and the odds will never be better than they are now while the race is still building its waiting list. If you are near the High Performance standard, chase that instead, since a guaranteed place beats a draw every time. Then treat Boston as the separate project it is, the one where every extra minute of fitness converts directly into a better chance. Worth knowing if you are considering Sydney as your Boston qualifier: it is an AIMS certified course without the kind of steep net drop that the 2027 downhill adjustment discounts, so a Sydney time counts at face value, but the harbour crossing and the climbs through the eastern suburbs make it a rolling race rather than a fast one. Pick it for the experience, not the buffer. The full ranking of the majors by difficulty of entry is in which major is hardest to get into, and the standards that other majors publish are collected in marathon majors qualifying times.

To see where your own time actually stands, put your age, gender and marathon finish into the cutoff predictor. It returns your buffer, an estimated chance for the next cycle, and the thing a single forecast cannot give you: whether that same buffer would have been accepted in each of the last thirteen real Boston cycles.