Ontario Competitive Trail Riding Association
- Association news and information about the sports of competitive trail riding, endurance riding, and ride 'n' tie. Stories, photos, how to's of long distance riding.
- http://www.octra.on.ca/

American Trail Horse Association
- Registering and promoting trail horses in the US of all breeds.
- http://www.trailhorse.com

British Columbia Competitive Trail Riding Association
- A non-profit organization dedicated to promoting and improving the rapidly growing sport of Competitive Trail Riding in western Canada. It is patterned after North American Trail Riding Conference, and operates in conjunction with Canadian Long Distance
- http://www.bcctra.ca/

Arabian Trail Riders Association
- Formed to promote competitive distance and recreational trail riding. Club membership is national although activities are primarily in Central and Northern California area. Listing of scheduled rides, membership, meetings, and newsletter. An IAHA Affiliat
- http://www.trailriders.org/

Santa Cruz County Horsemen's Association (SCCHA)
- Information on the association, membership application, schedule of rides, newsletter, meeting notices, and links.
- http://www2.cruzio.com/~candg/SCCHA_Webpage.htm

Eastern Competitive Trail Ride Association
- Founded in 1970 as the official regulatory body to promote the sport of Competitive Trail Riding and Competitive Distance Drives in the Northeastern and Mid-Atlantic US states. ECTRA membership form, information on rules, and links to other Endurance org
- http://www.ectra.org/