I was partially successful in catching the early runners. The actual leader was moving so quickly that he slid out of view before I could get a fix. Not knowing exactly where they'd be running, I had to adjust my camera somewhat more than I''d guessed, and missed him. I got these two, though, running second and third. I''m pleased with how this turned out.All three of the leaders were running about as fast as I can sprint. They''d been keeping it up for ten kilometres already, by this point (or maybe twenty).