'Bent Trail Riders Great riders' group in southwestern Ohio, especially on and near the Little Miami River Rail Trail system. http://www.siscom.net/~grindix/btr/index.htm
Binghamton NY area Southern Tier Bicycle Club Home of the Great Fingerlakes Bicycle tour. A great weekend ride in the fingerlakes region of Upstate NY the first full weekend in June. Not a bent specific ride but very bent friendly http://www.southerntierbicycleclub.org
Coastal Cyclists of Charleston SC A good bunch of folks here in South Carolina - hosts a couple of centuries/year and have a growing number of active recumbent riders http://www.coastalcyclists.org/
Get Bent. org Jose Hernandez's page linking to South Florida Recumbent Riders--lots of cool stuff from one of the forces behind 'Bent Rider OnLine! http://www.getbent.org/
MARS - NY Metro Area Recumbent Society Serving NY, NJ, CT and PA. Fairly large, active club. Lots of great info on the website. http://www.recumbents.com/mars
Oklahoma Bicycle Society Welcome to the Oklahoma Bicycle Society web page. OBS was organized in 1973 to promote all aspects of bicycling in the state of Oklahoma. Most of OBS's 350+ members live in the central part of the state in or near Oklahoma City, but there are also members scattered throughout the state and several who reside in surrounding states. OBS members are happy to provide information about cycling in Oklahoma to anyone interested. http://www.oklahomabicyclesociety.com
Recumbent Riders of Sacramento Includes riders from all of North Central California. Two monthly rides. http://groups.yahoo.com/group/Recumbent_Riders_of_Sacramento/
Sacramento Bike Hikers Oldest Bike Club in Central Valley of California. Four to 5 rides per week. Approximately 150 members. http://www.bikehikers.com