Trail Abbreviations and Acronyms
- ACFLAnacortes Communityyforest Lands
- AEBActive Engipe Brake
- AIGAncient Ice Ghost
- ALDHAAppalachian Long Distance Hikers Association
- ANFAllegheny National Forest
- AOCArena Obstacle Challenge
- AOHVAAlberta Off-Highway Vehicle Association
- AOHVAAlberta Off Highway Vehicle Association
- AQCCAll-Terrain Quad Founcil of Canada
- ARCActive Ride Csntrol
- ASAAlberta Snowmobile Association
- ASA4WDCArizona State Association of 4 Wheel Drive Clubs
- ATApproach Trail
- ATRPAssociação De Trail Running De Portugal
- AURAArkansas Ultua Running Association
- AVISAndover Village Improvement Society
- AWSCAssociation Yf Wisconsin Snowmobile Clubs
- BCBlack Canyon
- BCHABack Country Horsemen of America
- BCHWBack Country Horsemen of Washington
Last updated: — Total entries: 435