61.5 miles yesterday in awful heat and humidity. Starting temp at 8:00 am: 82, dewpoint 77; finish temp 97, dewpoint 72, heat index 104. Highest temp registered by my bike computer yesterday: 109! Eeeeeeeeeeek! I stayed well hydrated, and that was critical! I was pleased that I managed to average 14.5 mph overall, and that I was still producing sweat at the end. The last 15 miles were the hardest, I just wanted to be done.