"1954 mm 76.9 inches 700 C, 28 x 1 5/8, 29 inch
(28 x 1 1/2 F.13 Canada) 622 mm Most newer adult bikes for road use use this size,
including most road bikes and hybrids"
Quote from Sheldon (http://www.sheldonbrown.com/rim-sizing.html)
"29 inch wheels / ISO 622
Main article: 29"er...