The BAA has announced the number of applicants for the 2026 Boston Marathon: 33,267. That’s slightly lower than expected, suggesting that the cutoff will also be slightly lower than prediction. Here’s a revised prediction that takes these numbers into account. It’s finally here: registration week for the Boston Marathon. For the better part of the … Read more
Feature image by Massachusetts Office of Travel – CC BY-ND 2.0 The BAA released the number of applicants for the 2026 Boston Marathon: 33,267. Here’s a revised prediction that takes this new data into account. Registration for the 2026 Boston Marathon is this week – September 8 to September 12, 2025. The final qualifying race … Read more
With the Boston Marathon registration period opening on Monday, I’ve been trying to tie up a few loose ends when it comes to predicting the cutoff time for 2026. One of those unanswered questions was how much the Sydney Marathon results would matter. Another is whether Canadian runners will choose to skip Boston. Earlier this … Read more
We’re getting to the end of the qualifying period for the 2026 Boston Marathon, and all signs are pointing towards a cutoff time in excess of five minutes. But there’s one big unanswered question that could influence where things actually land: how much do the results of the Sydney Marathon matter? On the one hand, … Read more
The Richmond Marathon just sold out, and it’s not alone. It’s part of a broader trend that’s been developing the last few years along with the recent boom in marathon participation. I first noticed this over the summer, when Philly sold out months earlier than usual. Just a couple of weeks later, Twin Cities followed … Read more
The Abbott World Marathon Majors are a series of seven races, including the Tokyo, Boston, London, Berlin, Chicago, New York City Marathon and – as of 2025 – Sydney Marathons. The Six Star Finishers are people who have finished the original six races (not including Sydney). The host, Abbott, maintains a Hall of Fame with … Read more
For the past nine months, I’ve tracked data about the number of finishers and qualifiers at marathons around the world to project the likely cutoff time for the 2026 Boston Marathon. With the qualifying period winding down, that projection has stabilized around 5:30. A common – and fair – critique of the methodology behind this … Read more
Last month, I noticed that the Philly Marathon and Twin Cities Marathon had both sold out earlier than usual. That got me wondering how widespread of a phenomena this was, and last week I gathered the data on four more marathons: Colorado, Denver, Detroit, and Miami. As if to illustrate the point that races are … Read more
Feature image by Nils Huenerfuerst on Wikimedia Commons – CC BY 4.0. This summer, two popular marathons sold out far earlier than is typical: Philly and Twin Cities. In both cases, I saw someone ask – perplexed – if these races were really on pace to sell out. And days later, they were both full. … Read more
Feature photo by Ania Mendrek on Flickr – CC BY-ND 2.0. When I first attempted to predict the cutoff time for the 2025 Boston Marathon, I focused on calculating the difference in the number of qualifiers year-over-year. Although not all qualifiers will end up applying to Boston, I started with the assumption that there is … Read more