Central Indiana Wilderness Club - Activities include hiking, bicycling, camping, canoeing, skiing, and spelunking. Offers schedule and membership information. (Indianapolis) - http://ciwclub.org
Purdue Outing Club - Involved in backpacking, caving, climbing, biking, and adventure racing. Includes schedule, trip reports, pictures, gear list, news, and a message board. (Purdue University, West Lafayette) - http://poc.purdue.org/