While preparing for the Spring Equinox Half Marathon this past weekend, I kept wondering how my running would be affected by the high altitude in Colorado. I knew my training pace had improved but would the high elevation slow me down? Apparently so, after reading various blogs online. So I didn’t set high expectations for myself to PR (1:49:12, 8:20 pace). I sort of gave myself a free pass even before starting the race. Oh, it’ll be alright if I don’t PR. It’s hard running at high elevation. It’s expected that you’ll slow down.