COURTESY CHARLES HUNTER Charles Hunter, right, and James Kijek hold their unicycles aloft after hiking up a rock spire at Makapuu. COURTESY CHARLES HUNTER James Kijek, left, and Charles Hunter, hold ...

At 15, Carol Boger had developed quite a following of neighborhood kids thanks to her unicycle. In the summer of 1979, Boger used $150 of her earnings from babysitting to buy a 6-foot unicycle. She ...

Despite its obvious advantages – there’s less rubber on the road, there are fewer moving parts and both your hands are free for carrying the shopping – one-wheeled transport has had a patchy history.

Ellen Dalrymple of Fort Wayne suggests that’s what the boy in this photo is saying. He might well have been begging for a turn. Carol Boger had been riding unicycles for 2½ years when In the summer of ...