McNamara won in 3:59, just beating out Mac Fleet while Kampf won in 4:33 over Gabriele Grunewald (4:35).
Men's field is led by Jordan McNamara, Pat Casey and Mac Fleet while the women's has Heather Kampf, Gabe Grunewald and Ashley Higginson.
McNamara runs 4:03 to beat Leo Manzano by less than a second with Trevor Dunbar 3rd. Gabriele Grunewald wins the women's race in 4:32 over Heather Kampf and Sarah Brown (both 4:33).
He'll face a field that includes Jordan McNamara Michael Rutt and Jack Bolas.