Wiles leading Mees at the appex of turns 3 & 4. But, however close the two were at this point in the track, on the exit of turn 4 it was always the case that Wiles seemed to be able to accelerate off the turn and down the long front straight just a little bit earlier than Mees, and that made all the difference. Both were drifting very wide out of turn 4 and were using the edge of the dirt (up against the fence) as something of a berm--something nobody else was able to do over and over.
It's Henry Wiles, Jared Mees and Dominic Colindres. It was Colindres who provided the real surprise of the race (he still has a letter attached to his racing number). He beat out Mees in the heat.