I'm not the person you're responding to, but I think his assertion is that it's possible to participate in a marathon without being healthy or physically fit (b

I'm not the person you're responding to, but I think his assertion is that it's possible to participate in a marathon without being healthy or physically fit (both being defined by a reasonable BF% and proper biomechanics to support long distance running). I do not agree with "no business being there", but I think the idea that being overweight/moving incorrectly and trying to run long distances will increase your overall injury risk. It should not be a surprise when a 230 lb person suffers knee and ankle injuries as a result of LDR, regardless of shoe tech.