I kept track of my driving mileage this last year here, and my biking mileage here. I drove (that is, I was the driver of a vehicle) for 5,056.1 miles and bought 152.341 gallons of gasoline. I bicycled 837.52 miles during the same year, almost entirely in just-under-two-mile-each-way commutes to school.

That means, according to the .28 calories per mile per pound of body weight calculation suggested by this site, I burned about 31,658 calories of food by biking this year. That’s about 1,266 medium-sized carrots, or 220 beers. And, according to this site, that is approximately the same number of  calories that are in a gallon of gasoline, so I bought 152 times as much calories of gas to drive my 5,056 miles as I did food energy to bike 837 miles. That makes biking a heck of a lot more efficient! My driving calories could have gotten me about 125,000 miles on a bicycle.

I’d like to do a cost analysis, too, but I’m behind on updating Quicken. Maybe later.