A finish time is one number. The race is the rest.
Pace Notes reads the recorded splits of 4.1 million marathon finishes, so you can see how races like yours went. It is free, and there is nothing to sign up for.
Where to start
Why it exists
Runners choose a pace, a goal and a course with little to go on. A finish time says how a race ended, not how it unfolded. Pace Notes shows what happened, mat by mat, so you can make your own plan.
It describes past races. It is not a training plan or a promise of a result.
How it is made
Pace Notes is made by Andrew Kam, from public race results and the questions runners ask before and after a marathon. It began at the end of August 2026 as a study of one thing, the sustained slowdown, and grew from there. It has no ads, and the code behind every page is public.
The detail is on How we know: where the data comes from, how new data is checked before it reaches the pages and what the numbers cannot show.
Have a race question the data could answer? Send Andrew the idea: Request an analysis.