Keep your eye on the Orienteering Cincinnati Schedule Page:
March 22-24 will be the annual Flying Pig and 2018 Orienteering USA Masters Nationals. Friday will be at Camp McKee, at Mt Sterling, KY east of Lexington. Saturday and Sunday will be at the unique Carter Caves State Park, a little over an hour east of Lexington off I-64. Carter Caves features karst terrain with several caves and several natural arches. (We can use pre-runners if the meet itself doesn't fit your schedule)
There are also events near Cincinnati on March 1 (evening), 2, and 9.
The weekend of March 16-17 has a Saturday meet near Louisville, KY, and Sunday near Dayton, Ohio.
Indianapolis usually does the "Conquer the Crossroads" rogaine sometime in March, usually somewhere between Indianapolis and Louisville. I haven't seen any info on 2019 yet.
There are also several permanent courses in the Greater Cincinnati area, and the Kentucky Orienteering Trail features maps in several Kentucky State Parks including Taylorsville (just east of Louisville) and Big Bone Lick (just south of Cincinnati)