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A couple of weeks ago, I asked if anyone had footage of fast runners running slowly. The reason: I was curious to see whether the well-known fact that fast runners take rapid strides is (a) because of the way they run, or (b) because of the speed they run at. The Runblogger, Pete Larson, just sent me a couple of great links showing two of fastest runners ever, jogging along comfortably: Usain Bolt and Paul Tergat.
My rough calculations showed Bolt taking 18 steps in 6.7 seconds, for a cadence of 161, and Tergat taking 8 steps in 2.8 seconds, for a cadence of 171. You can also watch Tergat at 1/3 speed here. For the same 8 steps, I get 8.5 seconds, for a cadence of 169 — so let’s say about 170 for Tergat.
The point? Just because they run their Olympic races with a relatively rapid cadence (257 for Bolt!) doesn’t mean they maintain that same cadence when they’re jogging along comfortably. (Okay, I promise I’m done with this topic, at least for a little while!)