Saturday, March 2, 2013
McMillan Running Calculator vs Reality
There are several pace calculators out there, but McMillan is arguably the most popular.
They claim to be able to predict your race pace based on a time for a different distance.
I plug my best 5k time into it and got this:
My 10k PB was on a cheater course (net downhill) so that explains why it's a touch faster than the prediction.
My 1/2 time is pretty close to the McMillan estimate (and I think I can hit the estimate on the right course!).
My marathon time is nowhere close. In fact I don't for a moment think that the pace McMillan predicts is attainable for me... it's just waaaay off. I went out just over 5:00/km at the NYC marathon, and that was about as fast as I dare dream of running over 42.2km.
Is McMillan overly optimistic over longer distances? Is the weight penalty a bigger factor as the distances get longer? Or is it just highly personal, and I'm good at pushing through short intense pain but can't hold it together over 42.2?
Inquiry minds want to know.