Yeah, speed and endurance are an interesting equation. Most people, you plug in their 5K time to one of the calculators, and it predicts their 10K time pretty well, but it's overly optimistic on, say, 10 mile and half marathon times, and ludicrously optimistic on marathon times, because most people have more speed than endurance. I'm kind of the opposite, because I can't imagine running a 5K at the speed my half marathon time predicts (or vice versa, my 5K PR predicted a half marathon time that turned out to be far slower than my actual time). But I haven't yet really extended that to the marathon.
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Date: 2010-09-14 05:21 pm (UTC)Yeah, speed and endurance are an interesting equation. Most people, you plug in their 5K time to one of the calculators, and it predicts their 10K time pretty well, but it's overly optimistic on, say, 10 mile and half marathon times, and ludicrously optimistic on marathon times, because most people have more speed than endurance. I'm kind of the opposite, because I can't imagine running a 5K at the speed my half marathon time predicts (or vice versa, my 5K PR predicted a half marathon time that turned out to be far slower than my actual time). But I haven't yet really extended that to the marathon.