Well, I don’t know. But, if you are a barefooter, I do know what’s not in your carbon footprint: shoes (or at least, no where near as many shoes as the non-barefooter).
According to this article, Running’s Impact on the Earth, from the November 2008 issue of Runner’s World, a pair of running shoes and socks has a carbon impact of around 170 pounds of CO2. Leather shoes fall in about the same range.
170 pounds is about the equivalent of driving 150 miles.
A lot, however, does depend on what type of shoe is being discussed. According to this Wall Street Journal article, Six Products, Six Carbon Footprints, shoes can run from 22 pounds up to 220 pounds, depending on how they are made. If you just have to wear something, flip-flops are pretty much the lowest, with some as low as 22 pounds of CO2 per pair.
Go barefoot. Go green.
http://comics.com/working_it_out/2010-02-21/
Interesting facts!
One very important aspect is how long you will be using them.
Shoes and clothes are treated as consumer goods, worn for a season or two, then thrown away. Buying quality goods and using them for a longer time, also things that can be repaired rather than having to replace them, drastically reduces your carbon footprint.
I think my shoes last so long because I don’t use them much. Using your items only when necessary is also a great way to increase their lifespan (this does not apply to your brain, muscles or other parts of the body!)