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).