How to Calculate the Running Economy

We measured these at ten kilometers per our, so about ten million miles. And like four elite marathon runners that can run a marathon at faster than 20 kilometer,. Traditional speed to measure it is 16 kilometers per hour. So why bit ther running? It a submaxyas tist exactly. By the way. We had people like, we had people like falling asleep on their chairs, a jury. Didn't want to savage.