» 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).    http://www.chd-solutions.co.uk/trec/

» Michigan Competitive Mounted Orienteering    Sport, membership, and ride information.    http://members.aol.com/totemks/cmomain.htm

» National Association of Competitive Mounted Orienteering    A non-profit organization offering information on the objectives of the sport, membership, ride calendar, ride results, chatroom, newsletters, and links.    http://www.nacmo.org/

» TREC UK    Information about the sport of TREC, which includes mounted orienteering, and discussion forum.    http://trec-uk.com