Stationary bike ride before work, 22.8 mi in an hour at level 13. I couldn't get a steady video or music stream, so I just rode and focused on my effort. I made 11.2 mi in the first half and 11.6 in the second. I could tell toward the end that my effort level was dropping off. My heartrate in the second half probably didn't drop below 160 bpm, so it was a sustained high output effort.
Total mileage = 22.8 mi
Avg heartrate = 158 bpm
Total calories burned = 800
