By Raymond Britt
We've taken the 26,000+ Boston Marathon 2017 finishers and created a database based on finishers from the 6,943 cities they came from, all over the world, and reporting the average finish time by age group by city. For a different view, in another post, we mapped all the results in this database, by city, around the globe.
For more, see www.RaceBoston.com
