I've run both races (4PPM and 11 PPA). I don't think it makes that big a difference. I PRd the Ascent portion of the race in 2012 PPM. Last year I topped that in the PPA (topping my 2012 Ascent portion by 4:51).I don't think it makes a big difference, but it probably makes a little one. Each race has its challenges regarding traffic.