this post was submitted on 28 Jun 2026
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It's definitely true for a day long ultra marathon, definitely not true for a 5k, but where the dividing line is is hard to pin down (and it's going to be person specific).
Oh, and happy third cakeday!
We're talking about a marathon in this thread. 42.195 km.
Yeah, but I dont know if that dividing line is less than or greater than marathon distance.
Fair point. I would say that in terms of general wisdom, the answer is very clear: it's less than or equal to. Nearly every place you go will say that running a full marathon distance in marathon training is unnecessary at best, and counterproductive at worst.