The Muddy Millers at the Terrain Race in Flagstaff

Spartan Strong

For a couple of reasons, I’ve long said that that my favorite obstacle course race was the Terrain Race in Flagstaff back in 2016. It was the debut of The Muddy Millers and it was on that day that the twin sons jumped up from the half-mile Mini-Monkey race to the full 3.1 mile big…