Used Quintana Roo Titanium Triathalon Bike Model 3AL-2.5V/6AL-4V with hard - sided case. Has 23-622/700x23C wheels mounted on the Mavic Open Pro SUP rim. I took initiative and measured the bike according to what the internet said was the way to measure it. It is approximately 21 3/4 "(55,245 cm) from the base of the pedal axle to the top of the seat post. The center of the tube into which the forks enter the center of the seat tube is also approximately 21 3/4" (55,245 cm).