This is at about mile 6 so I was feeling quite fresh at this point. I was carrying a disposable camera with me to take this shot. Stopping to take a picture provided an excuse to stop for a moment. My training was based on running for 10 minutes, walking for 1 minute and repeating until finished but particularly where there were a lot of spectators, I found it difficult to stop. For the first several miles, stopping would have caused significant disruption to other runners but the crush of the crowd made it impossible to run as fast as I intended so stops weren't really necessary.