Molly Huddle broke the course record but got beat.
"He should be able to run considerably faster than it. But in cold weather, [sometimes] he has a bad reaction where he has severe breathing problems. We brought him some masks to wear but that cuts down on your breathing.
"Sometimes just trying to run a little too fast puts you over the edge. If it was a warm day and other athletes were pushing, I think he could run underneath that record. So as a result, I'm going to tell him, 'Go out and try to win the race. If it's going well and you're feeling good, go for it at the end. But not from the beginning.' He hasn't dropped out from asthma for a couple years in a race but I don't want it to start [Thursday]."
The women's field includes Diane Nukuri, US 5000 champ Nicole Tully and former NCAA champ Emma Bates. *Race Website