Is the Age Distribution at the Boston Marathon Representative?

The finish at the 2022 Boston Marathon, with many Masters runners coming across the finish line.

Last week, I published an analysis of the new Boston Marathon qualifying times. That analysis quite clearly shows that the qualification rate – the percentage of runners in a given age group who run a qualifying time – increases with age. A few age groups in particular – 45-49, 60-64, and 65-69 – had disproportionately … Read more

2026 Boston Marathon Cutoff Time Tracker and Prediction

Note: The results of this year’s Boston Marathon have been incorporated into the tracker – bumping the projected cutoff time significantly. Yes, it was a good year at Boston. But take a deep breath and don’t freak out just yet. When I de-duplicate the results next month, the projection should come back down (slightly). Read … Read more

Lessons from the Chicago Marathon for Boston Qualifying Hopefuls

Last month, I posted a lengthy analysis of the Chicago Marathon results. Part of that analysis was whether runners managed a negative split or not. Subsequently, I’ve done some more thinking about this issue. After some discussions around the data, I came up with a different way to think about the problem. Instead of looking … Read more

Is the Boston Marathon’s Selection Process Fair to Both Men and Women?

Finishers at the 2024 Boston Marathon

Many runners have strong opinions about Boston’s qualifying times and their selection process. People will inevitably complain that it’s unfair for one group or another. I recently saw a post in a Facebook group suggesting that the process was unfair for women – and that the new qualifying times would make things more unfair. This … Read more

Boston Marathon Cutoff Time Announced: Lessons Learned

Spectators at the 2024 Boston Marathon

This week, the Boston Athletic Association officially announced the cutoff time for the 2025 Boston Marathon: 6:51. As they have done in the past, they included with this announcement a collection of data and statistics that tell some of the story of the applicant pool and the field of qualifiers. Absent a full release of … Read more

Boston Cutoff Time: What the Number of Applicants Tells Us About a Prediction

Friday, the registration period for the 2025 Boston Marathon came to a close. Along with many others, I was eagerly waiting to see if they would release the number of qualified applicants. They didn’t. By the end of the weekend, I was beginning to think they might withhold that information until they announce the actual … Read more

2025 Boston Marathon Registration and Cutoff Time: Everything You Need to Know

Runners at the 2024 Boston Marathon

Registration for the 2025 Boston Marathon is drawing to a close, and over the past week I’ve seen a lot of the same questions come up over and over again. It will still be another week or two before acceptances and rejections go out, and it’s likely these same questions will continue to circulate. So … Read more