Mercia TREC Club
English club that practices TREC, a competition that is a combination of orienteering on horseback, and maintaining set speeds (normally trot or walk).
Michigan Competitive Mounted Orienteering
Sport, membership, and ride information.
National Association of Competitive Mounted Orient
A non-profit organization offering information on the objectives of the sport, membership, ride calendar, ride results, chatroom, newsletters, and links.