If you took all the blood vessels (arteries, veins, and capillaries) out of your body and laid them out in one line, it would stretch over 60,000 miles (100,000 km), long enough to wrap around the earth 2.5 times.
This seems unfathomable to me. But I fact checked many different sources and it is true.
What none of them tell us, however, is that if you took all of the blood vessels out of your body, you would probably die. So don't try this at home, kids.