The Finishing Time Rule

The longer the race, the slower your pace. How much slower? Jack Daniels and J.R. Gilbert spent years compiling a table see Predict Your Performance that shows how much you should expect to slow down from one race distance to the next. We did some curve fitting to come up with a formula that generates a pseudo VO2 max for each race time, says Daniels. They sweated the math; now you just need to sweat the race. The Exception Terrain, weather, or how you feel on race day could all throw off the tables accuracy.