"Amateur runners who race just for time need psychotherapy," says Nishi
Gee, that seems much like the attitude we're discussing on another topic. Another example of a lack of respect for an effort that one has no comprehension of.
Anyway...eco-marathoner? Jet setting around the globe doesn't come across as eco-friendly. Just because you reuse your band-aids after flying from Charlotte to Vegas doesn't make you eco-friendly. Staying in Charlotte and using a new pair of band-aids would be far more eco-friendly.
Want to run a lot of marathons and be eco-friendly? There are 22 marathons this year in Wisconsin (an "official" count I saw was at 23 but, from what I can see, the Icebreaker relay and half was counted separately from the full marathon - I come up with 22). Come on out, you can probably ride bike to several of them if you set up shop in the Milwaukee area, you could arrange carpools to others. You probably wouldn't be able to run all of them but there are enough that you should be able to keep yourself busy.