Master Larry Klahn Ph.D - Founder

Until his passing in 2021, Master Larry Klahn served as the head instructor at Three Rivers. Since 1973, Master Klahn earned an extensive record among the martial arts community, achieving a 9th Degree Black Belt in Taekwon-Do, 6th Degree Black Belt in Kyuki-Do, 3rd Degree Black Belt in Judo, and a 1st Degree Black Belt in Hapki-do. He was heavily involved in training for both area Law Enforcement as well as close quarters combat techniques for the US Army. Master Klahn also designed, honed, and instructed Three Rivers' life-changing W.I.S.E. class.


TaeKwon-Do is the technique of unarmed combat for self-defense involving the skilled application of punches, flying kicks, dodges, and interceptions with the hands, arms, and feet in order to effectuate the rapid destruction of an opponent.


Judo was founded in 1882 by Professor Jigoro Kano. Judo utilizes the techniques of throwing, pinning, grappling, choking, and arm bars. Judo was introduced to the U.S. in 1902 and is an Olympic event.


Hapki-Do is the art of bringing together energy. It is distinguished by three essential techniques: passivity when opposing force, countering and attacking with circular movements, and absolute penetration of an opponent’s defenses the “wake” (water) principle. For example, if an attack is strong, one must receive it gently. Likewise, if the attack is gentle, one must counter powerfully. This complementary manner of reacting establishes a perpetual liquid rhythm as well as constant mobility – the hallmark of Hapki-Do.