The Primal Rush OCR is sure to bring out the savage in you as you run a nearly 4 mile course of water, dirt, mud and obstacles to trip you up at every turn. Oh yeah; and how about we throw in a swim for good measure. Participants will race to the finish for prizes, medals and bragging rights as they crawl, climb and fight their way to the gritty finish. Not running the race? Come out as a spectator and cheer on the racers! Primal Rush benefits The Tree House, a non-profit organization whose mission is to reduce the impact and occurrence of child abuse through counseling, educating, supporting and nurturing children and families in Barrow, Banks and Jackson Counties.