Flat track:
Thunderbowl Speedway-Ocala, FL. http://www.thunderbowlspeedway.com (website should be back up soon). They have practice most every Sunday, and they do have their own flat track AND TT series that trikes are allowed in.
Cross Roads Motorplex-Crossroads, FL. http://www.crossroadsmotorplex.com/ No open practices, available to race on ONLY during the Southern Flat Track League series.
Eastbay Raceway-Eastbay, FL. http://www.eastbayracewaypark.com/ No open practices, available to race on ONLY during the Southern Flat Track League series OR special events post in the SFTL forum on http://www.atvlforida.com
Valdosta Karting Complex-Valdosta, GA. http://www.valdostakartingcomplex.com/ No open practices, available to race on ONLY during the Southern Flat Track League series.
Sunset Ramblers-Galion, OH. http://www.sunsetramblers.com See site for schedule (Sundays May-Oct.)
TT Racing:
Thunderbowl Speedway-Ocala, FL. http://www.thunderbowlspeedway.com (website should be back up soon). They have practice most every Sunday, and they do have their own flat track AND TT series that trikes are allowed in.
Motocross-MX Racing:
Smith Road Raceway-Medina, OH. Races every Memorial Day, 4th of July, and Labor Day. Trikes welcomed and have their own class. This track is so old-school they don't even have a website!
Sunset Ramblers-Galion, OH. http://www.sunsetramblers.com See site for schedule (Sundays May-Oct.)
Drag Racing-Dirt
341 Dirt Drags-Hazlehurst, GA. http://341dirtdrags.tripod.com/index.html Not been there anytime recently, but a few years ago they most definitely allowed trikes.
Helman ATV Drags-Indiana, PA. http://www.helmanatvdrags.bravehost.com/ A new track, the owner has a trike and is friends with forum member Speedbump.