PITTSBURGH—The world's largest hand-drawn maze is short on people who want to solve it.

Joe Wos, 42 years old, is putting the finishing touches on a 35-foot-long, 4-foot-wide maze filled with thousands of U-turns, intersections and dead ends, and populated with frogs, tuna and pancakes. He is hoping for a world record, but one requirement is that somebody else solve it. That is a problem. Nobody really wants to.

"Let's...