Practically anyone who decides to run a 5K could do it tomorrow. It’s 3.1 miles - an easy hour-long walk for the non-runner who wants to get out there and pin on a bib. I have two daughters who run, and one who doesn’t, and all three of them are at the starting line most Thanksgivings for an annual turkey trot.

One early afternoon in December, the Blue Line platform at State Street held a couple dozen adults, a few of us obviously awaiting a train to the airport based on the luggage we dragged. The other platform, across two sets of tracks, was desolate except for one man, positioned at the end of the platform where the front of his train would stop. It was surprisingly quiet - so quiet that the sound of a suitcase rolling along the platform reverberated through the concrete station. The quiet was suddenly punctuated by the automatic voice announcing when the next train would arrive.