For the 3rd year in a row, I participated in the Double Down Challenge. The challenge is you have to run and complete the 4 mile race before the 10 mile race start line closes, then you run the 10 miler. It rained all morning and then stopped during the 4 miler, which caused the humidity to skyrocket. You can't blame the race for the weather, it's how it manages it. There were plenty of water stops to help keep everyone hydrated. The race takes you through campus of UNC-CH (my Alma mater), and it's beautiful (despite the hills). Beautiful course and plenty of spectators out supporting the runners