10K, 5K, mile, and apparently an 800m this year.
The following US runners appear to be confirmed. Probably a couple more still to come.
Hobbs Kessler
Sam Prakel
Morgan Beadlescomb
Josh Hoey - mile
Bryce Hoppel
Katie Izzo
Taryn Rawlings - mile
Races start early Saturday morning, live video feed at link below