BestRacesEditor’s note, September 23, 2026: The 149 marathons scored here were every marathon the index held. The marathon page now holds 119 races with 41 of them scored, because scoring now requires two measured signals rather than filling the gaps with a default — the change explained in “The 25% We Guess At”. On September 22 we found that RunSignup’s race search returns races in alphabetical order and stops at 5,000 results, so every race we had ever synced was named with a number or a letter from A to F. Searching state by state found 16,101 upcoming US races; the index now holds 7,000, the most our hosting can serve.
The live marathon rankings are updated every day. This piece looks at the list as it stood on July 15, 2026.
Rank 149 marathons by a fixed formula and the podium mostly confirms what runners already believe. The margins are where it gets interesting.
1. New York City Marathon (100/100)
New York, NY · est. 1970 · ~59,000 runners
New York is the scoring anchor. It has the largest marathon field in the country, five and a half decades of history, full credentials, and a five-borough course nobody confuses with anywhere else. It posts perfect component scores across the board, and every other race is measured against it.
2. Chicago Marathon (94.5)
Chicago, IL · est. 1977 · ~54,000 runners
Field and credentials match New York point for point, with a 100 on both. The gap is character: fast, flat, and famously PR-friendly is a virtue, but our formula rewards distinctiveness, and Chicago’s efficiency is its personality.
3. Boston Marathon (93.3)
Boston, MA · est. 1897 · ~30,000 runners
The oldest annual marathon in the world maxes out history and credentials. You have to qualify to stand on that start line. It ranks third only because its deliberately capped field concedes points to the two giants above it. If prestige were a scored component, this ordering would flip.
4. Marine Corps Marathon (90.8)
Arlington, VA · est. 1976 · ~30,000 runners
“The People’s Marathon” posts a perfect character score: Marines at every mile, monuments on the course, no prize purse by design. What holds it to fourth is credentials: it has never been a Boston qualifier’s favorite for time-chasing, and our credential component is stingier with it than with the podium above.
5. Grandma’s Marathon (87.1)
Duluth, MN · est. 1977 · ~9,000 runners
Grandma’s has the smallest field in the top five by a factor of three, and it doesn’t matter. It’s a point-to-point along Lake Superior in a town that turns itself over to the race, and it posts another perfect character score. Grandma’s shows that our formula counts more than the crowd.
The other 144 marathons are on the full marathon rankings, every one with the same four-part breakdown.