Interval run: 800@5'00 + 400@7'30 - 10'00, 5 times.

1. Warm-up: 1.6K@5'27

2. 5 interval repeats. The 800m part wasn't always smooth as I had to labor a bit to keep around 5'00. The 400m recovery part was too fast, couldn't quite get under 7'00.

3. Cool-down: 1.25K@5'37.