It's in the NAZ Elite email newsletter but no mention of this on the web yet. Mantz is on the USA "B" team at Boulder Bolder and Cheserek is on the Kenyan team along with NAZ runners Masai and Kiptoo. USA's "A" team is Chelanga, defending champ Lenny Korir, and Teshome Mekonen. No idea how these things are decided or why Boulder Bolder doesn't publicize any of this in the media.
Also for the women, Edna Kiplagat, Emily Infeld, Laura Thweatt, Neely Spence, Carrie Verdun, Maggie Montoya will be the USA team members. Nell Rojas is an official starter for the citizen's race, along with her father, and not racing so start your conspiracy theories now. A little odd to not see any OAC or TME runners included, maybe one of them will lock down the citizen's race.