The New York City Marathon, visualized

7 min read

The New York City Marathon is right around the corner. The race is held annually on the first Sunday in November, which falls on November 1st in 2026. This year, I’ll be running it for the first time.

One unique thing about the NYC Marathon is that it’s one of few big marathons that makes detailed results available to download. Last year 59,122 people finished the race, the most in the race’s history.

Timing mats record every runner’s splits from mile 3 to the finish, and the New York Road Runners publishes the results. So naturally, I had to pull the data of the 58,721 finishers with complete records to visualize the race mile by mile.

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Each dot is a finisher, green when running faster than their average pace and red when slower.

Let’s follow a typical runner who finished in .

How hard is New York?

New York has a reputation for being a tough race. While bulk data from other major marathons isn’t easily downloadable, Chicago’s 2025 results are available. Chicago has a reputation for being one of the fastest and flattest major marathons. Compared to Chicago, New York certainly looks harder. The typical New York finisher took 4 hours and 24 minutes last year, 11 minutes longer than the typical finisher in Chicago three weeks earlier. Some of that gap is who runs each race, but a 2026 analysis that compared the same runners across 1.2 million marathon finishes found New York’s 2025 race about 4 minutes slower than Chicago’s for a three-hour marathoner.

New York runners also slowed more in the second half. Among men, only 7 percent ran a faster second half, compared with 10 percent in Chicago. Among women, 9 percent, compared with 12 percent in Chicago.

In New York, runners ran the first 13 miles 2 to 8 percent faster than their average pace, stayed within about 2 percent of it through mile 19, and ran every mile from 20 to 26 slower, by 4 to 11 percent.

Every group ran the second half slower, but faster runners slowed less

Is it the hills?

Partly, though not because runners slow down much on the climbs. The famous hills aren’t the slowest miles. Runners ran the Verrazzano-Narrows Bridge, the biggest climb on the course at about 140 feet, only about 1 percent slower than the flat miles after it, and the Queensboro Bridge about 3 percent slower than the two miles before it. The exception is Fifth Avenue. Mile 24 climbs about 90 feet alongside Central Park, and it was the slowest mile of the race, about 4 percent slower than the two miles before it.

The hills probably matter more through accumulated fatigue. Even though miles 21 to 23, from the Bronx through Harlem, are flat, runners ran them about 7 percent slower than their average. It probably doesn’t help that most runners wake up before sunrise to catch a ferry or bus to the start on Staten Island and wait hours before they start running, with the first runners starting around 9 a.m. and the last runners not starting until 11:41 a.m.

Runners slowed late in the race, not just on the hills

Pace is the typical runner’s in each split mile, compared with their own average for the race. Shading marks the climbs. Elevation is stretched vertically.

I’ll try to update this story with the 2026 results after this year’s race. Good luck to everyone running.