Zack Wirth is a 5th generation Montana rancher from the Wolf Creek. He studied at Montana State University where he met his wife, Patricia Johnson from Raynesford, MT. He served in the Montana Army National Guard. After college, he followed in his father's footsteps into earth-moving equipment and construction. His father operated Dozers and machinery of all sizes for road-building and reclamation. Zack has operated a variety of agricultural and construction machinery. He is experienced in building roads, irrigation systems, concrete, leveling building sites and commercial buildings. His mantra is "I've built so much with so little for so long that I can build something out of nothing in no time at all." With his construction business, he has built and reclaimed sites all over Montana and Wyoming. Zack is innovative, founding the movement for "small homestead, large landscape" in 1994 that has made homesites available through conservation within larger ranches in order to keep the land whole. He has designed and constructed solar-panel charged, battery operated wheel-line irrigation movers and installed them throughout his own ranch. The irrigation pump on his ranch is pre-dominantly fueled by pure waste vegetable oil."
Zack is a solid father and husband. He has been married to Patty for 43 years. Together they have raised six children and currently have 15 grandchildren. He graduated from Helena Central High School in 1969, and was a member of the only year that completed all four years of high school there before it became Capital High. He attends Sacred Heart Catholic Church in Wolf Creek.
In 2000, Zack and Patty started their dream business. A guest ranch on the family site, where they could share their love of the land and horsemanship with people from all over the world. In the years since it has began, they have grown from a struggling small cattle ranch, supported by Zack's construction business, to a successful and joyous guest ranch where the family can work together. The Rocking Z Guest Ranch shows people from around the world Montana culture, ranching lifestyle, and horsemanship. Zack shares stories of the history of Montana and tends to all the construction and farming needs of the guest ranch. He and Patty are aided on the guest ranch by their children.