Lieberman kept looking, and found an even more telling comparison: the top galloping speed for most horses is 7.7 meters a second. They can hold that pace for about ten minutes, then have to slow to 5.8 meters a second. But an elite marathoner can jog for hours at 6 meters a second. The horse will erupt away from the starting line, as Dennis Poolheco had discovered in the Man Against Horse Race, but with enough patience and distance, you can slowly close the gap. You don’t even have to go fast, Lieberman realized. All you have to do is keep the animal in sight, and within ten minutes, you’re
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