Much like normal characters at WDW, characters during races will almost always have a handler with them. They will gladly take a picture with your camera. Occasionally there will be no handler. Most times the MarathonFoto person won't use your camera to take a picture. Once in a while they will, usually only if the handler isn't there. At some of the more popular characters, they will have 2 CMs, CM1 grabs camera and takes pic of Runner1, while CM2 grabs camera for Runner2. Then when Runner1 is done, CM2 is already ready to take the pic of Runner 2. CM1 gets camera from Runner3 while CM2 is taking picture, then CM2 gets camera for Runner 4, etc. Helps to make the line move much faster.