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Slow Bro
RE: Run a 1k time trial. That's your marathon time. Change my mind!

hmmmmmmmm wrote:

No. Completely different energy systems and muscle fibers.


Of course, but there's a fitness correlation for most people who aren't pros.

I can tell you based on my mile and marathon PRs that my 1k/marathon time would likely be within a second or two of each other.

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