I can certainly relate to your heat issues. Sounded so similar! Except I believe SD temps were much worse than KS -- think I saw that it was a high of 98F that day?? Yikes. Great job toughing it out and making the most of your day. Sounds like such neat terrain.
It was gorgeous. I'd love to go back and try this race again. Meanwhile, we're soaking up all the Black Hills beauty that we can on the family vacation part of the trip...in temps ranging from the 50's to the 70's ever since race day. Weather can be a real asshole.