The Ultimate Towner is an annual community building obstacle course race that takes place each May in Jackson Hole, Wyoming. The event, produced by Grand Dynamics International, a team building and leadership development company, that benefits a local Jackson non-profit. The Ultimate Towner is the ultimate community obstacle course race! 4 Miles, 25 Obstacles, 100% Inspiration! It is more than just an event, it's a philosophy and a way of life that inspires community building and people overcoming their obstacles!