Park Leadership
State Charter
In 1995 the Legislature authorized the Washington State Horse Park legislation which states, in part: "Establishing a first-class Horse Park facility in Washington would meet important needs of the state's horse industry, attract investment, enhance recreational opportunities, and bring new exhibitors and tourists to the state from throughout the region and beyond. A unique opportunity exists to form a partnership between state, county, and private interests to create a major horse park facility that will provide public recreational opportunities and statewide economic and employment benefits."
The complete legislation is in the State Charter document; its key provisions for leadership and direction are outlined below.
The Authority
The legislation established the Washington State Horse Park Authority ("the Authority"), with a seven-member volunteer board of directors; in 2013, this was changed to an eleven member volunteer board of directors. The Authority is responsible for developing, promoting, operating, managing and maintaining the Horse Park. The legislation provides the governor appoint board members from across the state experienced in different horse disciplines, activities and professions that compliment the development and operational needs of the Horse Park. Also included are a representative from Washington State Parks Commission and a director who represents the local interests of the community where the Horse Park is located.
The complete legislation is in the State Charter document; its key provisions for leadership and direction are outlined below.
Authority Board Members
Todd Trewin
President
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About
Todd represented the US in the sport of eventing as a member of the US Olympic team in Barcelona, Spain in 1992. Today Todd runs an active training program, competes locally, and designs/builds cross country courses. He and his wife Tracey operate their own boarding and training property in Fall City.
Kathy Mayers
Vice President
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About
As a native of the Pacific NW, Kathy grew up riding horses and was actively involved in equine 4-H clubs and showing her horses.
She has raised 3 sons that she is extremely proud of and treasures family time. She has a passion for empowering the younger generations into their personal greatness.
When Kathy isn’t with her horses or family, she can be found practicing hot yoga and spending time with dear barn friends!
Mitch Williams
Treasurer and Kittitas County Representative
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About
Mitch owned MF Williams Construction Company for 35 years and was a state director with the Building Industry Association of WA. He has competed in reining and cutting and is a 25-year member of Ellensburg Rodeo Gold Buckle club. He and his wife Julie live on their ranch in Ellensburg.

Leslie Thurston
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About
Leslie has been a corporate manager with responsibility for planning, new business development, investor relations and marketing. Her experience ranges from international assignments with major corporations to operating her own local company. She qualified for the national Medal finals in hunt seat equitation, and has competed in eventing and dressage.
Jason Both
State Parks and Recreation Commission Representative
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About
Jason has worked in the natural resource field for almost 20 years. Most of his career has been with Washington State Parks. He has served in numerous positions within Washington State Parks and most recently his role as the southeast region manager. Jason and his wife, Kendra, have three children and own several horses at their ranch in Ellensburg.
Tom Dent
State Representative, Rodeo
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About
Tom has been a professional pilot since 1976 following a career in rodeo and as a working cowboy. He participates in many professional and community organizations. Tom and his wife Dayna raise grass-fed beef, bison and hay on their ranch in Moses Lake.
Denise Youell
Hunter / Jumper Trainer
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About
Denise is the owner and head trainer of Farpoint Farms, and has riders competing at the national level and winning many hunter/jumper, eventing and Welsh pony awards. For fun she also enjoys mountain trail, foxhunting and driving miniature horses.
Judy Warnick
State Senator
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About
Judy has shown English, dressage and western disciplines and served as a 4-H leader for 20 years in Grant County. In her free time, Judy and her husband, Roy, own five horses and a mule at their home in Moses Lake.
Macaulay Dukes
Secretary
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About
Macaulay is a PNW native with a lifelong passion for horses. She grew up riding and competing in dressage, 4-H, and show jumping before moving to eventing.
Outside of her equestrian endeavors, Macaulay is an accomplished employment attorney with a background representing private and public entities throughout Washington State.
When not working, she can be found riding her horse, Sandy, or hanging out with her dogs, Milo and S’mores.
Melissa Mohr
Eventing & Hunter/Jumper
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About
Melissa has been passionate about horses from her early years. She grew up competing in Morgan Horses, Hunter Jumpers and Eventing. After college, she worked in the Thoroughbred Horse Racing Industry and was in charge of leading all of their equine sales. Today Melissa works at Amazon in their Alexa division and has been actively competing in eventing in her spare time. Outside of work, she and her husband own a property on Vashon.
Caitlin Arden
Eventing
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About
Caitlin Arden is a Senior Director of Product Strategy at Expedia Group with over 16 years of experience in strategic management and consulting. She holds an MBA from George Washington University and degrees in International Affairs and German from the University of Georgia. Originally from Georgia, she's called Seattle home for six years where she lives with her husband, two dogs, two cats, and a growing flock of chickens. An eventer, she has two horses, Luke and Roux.
Park Management
The Horse Park is currently supported by a small paid staff consisting of a full-time Executive Director, part-time Administrator/Membership Manager, and during the open season a full time Facility Manager and Grounds staff.
We rely heavily on a network of valuable volunteers who provide their talents and services in various ways. The Horse Park will always be reliant on volunteers to help keep costs down and provide their skills when and where needed. Please visit the Volunteer and Employment Opportunities page to see what opportunities are most critical or contact the office if you have an idea of how you can help.
Wendy Hensley
Executive Director
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About
Wendy has over 25 years experience in business management and marketing in several professional industries. She is the former Executive Director of Whispering Meadows Equestrian Center in Junction City, Oregon and the former owner of a landscaping/excavation company in Clark County, Washington. Wendy held marketing leadership roles and is also is the owner and editor of NW Rider Magazine which grew to a pre-pandemic print/digital circulation of more than 20,000 users. Wendy resides with her son, three horses, and three dogs in Cle Elum, WA. She is excited share in the local community and all that it has to offer!