Zone One is made up of participating APHA clubs in British Columbia, Washington, Oregon and Idaho, and together they host the Zone One APHA Horse Show in August.
To facilitate planning of the Zone One show, member clubs appoint delegates (and alternates) to the Zone One council to represent their APHA regional club. Zone One meetings are held virtually throughout the year, as required.
APHA members in Zone One are also represented by regional club delegates to NWCC, whose primary purpose is to coordinate APHA show dates and judges and to recognize outstanding competitive achievements at approved shows within Zone One.
APHA directors in Zone One are elected by APHA members in their respective states or provinces. APHA also acknowledges, annually, the top five exhibitors competing at APHA-approved shows held within each Zone.