Comparison. This is a 26" and a 700c...the wheels are basically the same diameter when you take the tire into account (I lined them up so they're sitting an equal distance off the floor), and you can see the BB on the 26" is higher (yellow dot = 26", red dot = roadie). You can also see I sit higher off the ground on the 26", despite the saddle being placed lower in comparison to the BB. This is a 26" XC weenie-mobile too...it'll be even more pronounced on most 29ers and on longer travel bikes.