Running Mathematics

Thanks to winter snow storms and poorly plowed roads, I am stuck running inside. I love running, but running on a treadmill gets really boring. Torturous. So, to battle insanity, I practice calculating exactly how many (or fraction of) 400m laps I am running at a certain speed on the treadmill at any given time. I have found that I'm becoming quite adept at calculating ugly-looking numbers, by picturing a 400M lap as a clock.

The screen reads 7.5mph. I have 1 min and 40 seconds left. I have run 4.5 miles. Will I make it to 4.75 miles? I think - 8:00 min mile! 2 min lap! 1 min will be 200 meters. Oh no! How can I make up 200 meters in 40 seconds?!

Then I think - 10mph is the fastest speed on my treadmill. 10mph is also a 6 minute mile split. 6 minute mile? 360 seconds? 90 seconds per 400 meters? 45 seconds for 200meters?

Failed: I won't be able to run that fast.

Maybe I have cabin fever already ..