“Hi, Just visiting from England and have been using the MBTA System. Do you know where I can find out the distances between the Stations for my records. Can’t find them on the web. Thanks in advance.”
In the MBTA Blue Book from 2010 (it’s a massive PDF, unfortunately), you can find the distances either by scrolling down to the subway section on page 22, or by using “Ctrl+F” and then typing in “distance.” The Blue Book is also an excellent, excellent resource for anyone looking for MBTA statistics. In addition, something I found that I rather like is this Boston Globe article about 10 MBTA subway rides that would be faster walking. I hope these help!