By Raymond Britt
We've taken the 26,000+ Boston Marathon 2017 finishers and geomapped them by the 6,943 cities they came from, all over the world, and sorted the average finish time by age group by city. Each green dot on the maps represents a city; click one you're interested in, and the results will appear in a pop-up box. For a different view, see out other post, a database with information for all cities and age groups, sorted alphabetically.
For more see www.RaceBoston.com