Originally Posted by
StanSeven
Without looking up specific data from my training logs and spreadsheets, I remember one marathon three years ago and my 10K split was around 42'. A few weeks earlier I barely broke 40' in a 10K.
Then you're running substantially faster at 10k than the marathon. 6:26 for 10k vs 6:58 for the marathon. That's very close to exactly what you're 'supposed' to be running for 10k vs marathon according the Mcmillan's calculator. That's not even close to the same pace.