Roads and tunnels and bridges and railways and other transport infrastructure are impressive. You could be driving for hours or days across the country or several countries and get the feeling that you will never run out of road. And you probably won’t. By some estimates if you stretch out all the roads on the planet into one long road you’d have a road the length of around 65 million miles. But the earth is a big place.

Our bodies are impressive too.

We all have pathways (capillaries, veins and arteries) that function to circulate blood and nutrients around the body while also ejecting waste. Similar to how a national road infrastructure works if you think about it.

If you were to take all these pathways out of the average human body and attach them end-to-end you would have around 60,000 miles of blood vessels.

The circumference of the Earth is 24,873.6 miles. That means if you were to connect your blood vessels end-to-end they would stretch around the world more than twice.

Source:

Full article published in The Vascular Society for Great Britain and Ireland