If you're on the run, you're trying to escape, usually from jail!
Here is one of America's most famous sportsmen, OJ Simpson - one the fastest ever American football running backs. Watch him go!
Let's pick him up again after his running career but still on the run.
His X wife and friend had been found brutally murdered and he was murder suspect number one. When police tracked him via his mobile phone a slow motion car chase began. Oh yes and America tuned in live to watch on TV.
Watch now and stay tuned for tomorrow's thrilling installment to find out what happened next.