Criteriums are good for spectators, less popular with racers. Criterium bicycles are designed with a particular eye to manuverability, because the peloton in a criterium is likely to be large and dense. Criterium bicycles are not usually built for comfort. They typically have drop handlebars with barcons . Because they must often be lifted up and carried while running, they are light and usually use tubular tires .
Cyclocross tires are fairly plump, and have knobby tread for better traction.
Cantilever brakes are normally used to provide better mud clearance. Cross Frame A cross frame is basically made up of two intersecting members, forming a cross. The vertical member would be the seat tube, and, perpendicular to it would be a back bone, which might extend and split to form rear stays. This type of frame is not as naturally strong geometrically as the more common diamond frame , so it gets its strength from the use of large diameter tubing, or monocoque construction, particularly in the case of the back bone. There are often gussetts or struts added to provide a measure of triangulation to the frame.