People that paid to run in this weather file past people that volunteered to stand in it.
Even the most enthusiastic volunteers were getting ground down after a while. While this volunteer did put on a smile and congratulate runners, there were a few brief spots where the exhaustion from a long, wet day were showing through.
A common scene near the finish line were spectators frantically glancing between the official BAA app sending them updates on their runner's status and the crowds of runners coming through the finish line. No one wanted to miss their runner come through, but it was difficult at best to spot individual runners in the later crowds.