Bonnema won the event after leading start to finish, running away from the field with a time of 1:31.52. Her nearest competitor had a time of 1:32.85.
Bonnema also had the fastest time out of the semifinals with a time of 1:32.30.
She was the runner-up in the same event last year with a time of 1:32.88 in the finals and finished sixth in the outdoor championships 400 meter race in 2012.
Briana Vander Woude claimed 5th place in the high jump after clearing 5-5.
Lauren Opp ran ten seconds faster in the finals than she did in the semifinals of the 5,000 meters and finished 8th with a time of 17:53.10.
Vander Woude and Opp both earned NAIA All-American status with their finishes.
Christy Sikkema jumped 36-00 in the triple jump and finished 15th while Merissa Harkema’s time of 5:12.99 in the mile earned 10th.