Originally Posted by
genejockey
But what if you're ON the equator? Is it even possible to ride a bike there?
You don't have to pedal there, as long as you stay exactly on the equator. Most people cannot do that because their tires are too wide. You need skinny tires aired up to max pressure so you have zero rolling resistance and a narrow profile. It is also mandatory to have radar so you can precisely calculate your position.