In order to rent bikes for your trip, we need to provide the bike rental company with specific sizing measurements on all participants. In addition to your height, we also need your bike inseam size (which is different from your pants inseam). Your bike inseam is the length from the underside of the groin to the bottom side of the ankle. Both measurements are in inches.

Measuring Your Inseam

The most important measurement when sizing a bicycle is your inseam length - essentially the inside length of your pant leg from crotch to floor. Since this is the primary measure used to calculate your best bike size, don't base your inseam simply on your jeans size. You need to be more precise. Here's how to do it:

• Stand with your back against a wall.
• Spread your feet 6-8" apart on a hard, smooth surface.
• Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).
• Have another person measure from the top of the book (spine) down to the floor.