Skyhook Ninja Fitness is Portland's Premier American Ninja Warrior gym. With 12,000 square feet of space, we are the largest American Ninja Warrior gym in the west coast. With full scale, custom fabricated obstacles, a bouldering wall, spring floor, trampolines and air bag, we have everything you need to train for American Ninja Warrior! Get a workout unlike anything else, and have fun at the same time. Skyhook is family friendly, but the minimum age of participants is 6 years old.