The longest bicycle in the world was crafted in 2015 by Santos and the University of South Australia. It was 135 feet and 10.7 inches long (41.42 meters). To prove that it was rideable, a group of cyclists rode it over a distance of 100 meters. They didn't use any stabilizers while doing so. ¹⁾.

Bicycles are very efficient, with up to 99 percent of the energy delivered to the wheels. Riding a bicycle is the most energy-efficient means of human transport²⁾. In fact, a man on a bicycle ranks first in energy efficiency among any traveling animals and machines³⁾.