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That’s why having a good estimate of goal pace and then practicing it in training is an absolute requirement to be ready for your best performance on race day.” Since half-marathon pace falls somewhere between those two thresholds for most of us, it makes it a hard pace to “feel.” Running close to a threshold is much easier for most runners. The lactate threshold is roughly one-hour race pace (half-marathon pace for really speedy runners, but too fast for most) whereas the aerobic threshold is roughly two and a half hour race pace (half-marathon pace for some of us, but a bit slow for many-and marathon pace for a few up front). “Part of the reason that half-marathon pace is such a weird pace for many runners is that it lies between two key thresholds: The anaerobic or lactate threshold and the aerobic threshold.
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McMillan Running has the perfect definition for the nuance of the half-marathon distance:
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