Fastest marathon courses: median finish time by race (19 big-city marathons compared)

The short answer: across the last three editions of 19 major city marathons, Boston has the fastest field with a sex-adjusted median of 3:34, followed by Valencia at 3:42. The slowest big fields are New York (4:23), Athens (4:43) and Washington (4:53). That is a spread of 1 hour 19 minutes between the typical finisher at the fastest and slowest race.

The ranking says as much about who gets to the start line as it does about the course. Boston requires a qualifying time, Valencia is a flat course that attracts runners chasing a personal best, and New York and Washington are enormous, charity-heavy fields where most people are there to finish. The chart and table below put numbers on all of it, using 1,213,000 official finishes.

The ranking

Medians are adjusted for the mix of men and women so a race with more female finishers is not penalised: the adjusted figure is 60% of the men's median plus 40% of the women's median, the same weighting for every race. Hover a bar for the raw numbers.

A few things stand out:

• Boston and Valencia are in a league of their own. Both have a median around 3:35 to 3:42 and about 70% of finishers break 4 hours. Valencia actually has the higher share of sub-3 runners, 17.7% against Boston's 14.6%.
• The northern European spring and autumn races form a fast middle group. Frankfurt, Barcelona, Copenhagen, Amsterdam and Rotterdam all have adjusted medians between 3:55 and 4:01, with 54% to 61% sub-4.
• The World Marathon Majors are not the fastest fields. Berlin (4:09) and Chicago (4:11) sit mid-table, London 2019 (4:24) and New York (4:23) near the bottom. Big ballots and charity places bring in a much wider range of runners.
• Washington is the slowest field in the dataset with a median near 4:53 and only 15.7% breaking 4 hours.

Full table

Most recent three verified editions per race. Only races with at least 15,000 pooled finishers are included.

Note how the raw median can mislead. Chicago's men (3:57) are as fast as Berlin's (3:57), but Chicago's raw median is six minutes slower because 45% of its field is women versus 34% in Berlin. The sex-adjusted column in the chart removes that effect.

Why the fields differ so much

Entry rules. Boston is the only race here where almost everyone had to run a qualifying time, which for 2026 starts at 2:55 for men and 3:25 for women aged 18 to 34 and relaxes with age. That alone pushes the whole distribution left. Valencia has no qualifying standard but markets itself as a flat, fast course and sells out with runners who come specifically to race.

Field size and charity places. New York, Chicago, London and Washington are huge and are filled largely through lotteries and charity programmes. They draw first-time marathoners and fundraisers, so the back half of the field is much bigger.

The course itself. Valencia, Berlin and Rotterdam are flat. Boston has a net downhill but punishing late hills, New York has bridges and the Central Park rollers, Athens is famously uphill for 20 km. The course matters for how fast a given runner goes, but the gaps in the table are mostly about who shows up.

Weather. A hot day can move a race's median by 10 to 20 minutes. Using three editions smooths that a little, but Chicago 2026 and New York 2022 were warm and show up as slow years in the 20-year trend guide.

How qualifying standards and cutoffs shape the field

Put four races on one chart and the differences are obvious. Each line shows the share of that race's finishers in each one-minute bin.

• Boston peaks around 3:28 and is almost symmetric around it, the signature of a field selected by time. Its tail is short: 99% of finishers are done by 5:55.
• Valencia has a sharp spike at 2:59 (the largest single-minute spike of any race) and a second peak just under 3:30. It is a race people come to for a time goal. The field ends abruptly after six hours, with the slowest finisher at 6:32.
• New York peaks at 3:59 but spreads out far to the right. 1.3% of finishers come home after 7:30, and the course stays open long enough that the slowest recorded finish is over 13 hours.
• Washington peaks at 4:59. Its field is the mirror image of Boston's: very few runners under 3:30 and a broad hump between 4:15 and 5:30, and 1% of its finishers come home after seven hours.

The 4:00 marker lines up with a visible bump at every race except Boston. Runners target round numbers, and the pile-up just under 4:00 shows up wherever the field is slow enough for 4:00 to be a stretch goal.

What this means for picking a race

• If you want company at your pace when you are racing for sub-3 or sub-3:30, Valencia, Boston, Frankfurt and Barcelona have the deepest fields there.
• If you are aiming to break 4 hours, you will be in the top half at Berlin, Chicago, Paris or Prague and comfortably in the top third at New York.
• If you want to finish without worrying about the clock, New York and Washington have the most runners around 5:00 and the most generous cutoffs.

Use the marathon pace chart to turn your target time into per-kilometre splits, and the finish time distribution guide to see where any time ranks across the 2026 majors.

Where the data comes from

Every number on this page is computed from official per-finisher results, compiled in the open Pace Notes dataset (CC BY 4.0). We used only editions verified against the organiser's published finisher counts, excluded wheelchair and handcycle divisions and records flagged as unreliable, and pooled each race's three most recent verified editions (fewer where the dataset does not yet hold three). Frankfurt's latest verified editions are 2018 and 2019, London's is 2019 and Paris's is 2019, so those rows reflect pre-2020 fields. Medians are of finish time, the figure that best describes a typical runner; averages are pulled upward by the slow tail.

Frequently asked questions

Which marathon has the fastest average finish time?

Among big-city marathons with verified results, Boston, with a median finish of 3:36:40 across its 2023 to 2025 editions (3:34 after adjusting for the sex mix). Valencia is second at 3:37:29 (3:42 adjusted) and has the highest share of sub-3 finishers at 17.7%.

Is Berlin really a fast marathon?

Berlin is a fast course, which is why elite records fall there, but its field is mid-table: a sex-adjusted median of 4:09 and 45% sub-4. A fast course and a fast field are different things. Berlin's big ballot brings in a wide range of runners.

Why is New York so slow?

Not because of the course alone. New York has around 55,000 to 61,000 finishers a year, 46% of them women, with a large charity and lottery contingent and generous cutoffs. The median of 4:25:41 reflects a field where most people are there to finish, and the race keeps the course open long enough that over 1% finish after 7:30.

What percentage of Boston finishers break 4 hours?

69.4% over the 2023 to 2025 editions, and 14.6% break 3 hours. Only Valencia, at 70.3% sub-4, has a higher share.

Which marathon has the slowest finishers?

Of the 19 races compared here, Washington, with a median finish of 4:54:25 and 15.7% of finishers under 4 hours. Athens is next slowest at 4:38:21, helped along by its long uphill first half.

Further reading

• Marathon finish time distribution across the 2026 majors
• How marathon finish times have changed over 20 years
• Average marathon time by age and gender
• Marathon pace chart: finish times for every pace
• NYC Marathon 2026 results
• Marathon world records