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RE: How Brad Barton beat years of injuries to be oldest sub-4:20 miler at 53
The point is not whether Barton "maxed his potential" at 4.05 but that his decline over nearly thirty years is only fractional. Taking injury into account - as this thread does - it may only be about 15 or so seconds in about 3 decades. I question whether that is naturally possible for a runner in their fifties. That is it. If you think it is, perhaps you could give another example of an elite runner whose decline from their twenties to their fifties is in the same ball-park as Barton. I can't think of any.
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