Hi, while searching the Internet for some nice barefoot girls, I came across some sites which are not for barefooting in first place, but have some great sets.

For example:

Neandra.com is for collars and stuff but you should see their girl Nadine http://neandra.com/index.php?cmd=sh.set&sid=258
Some of sets are quite nice!

Publicdisgrace - some videos shot in the city are also with dirty feet girls

Nude-in-pulic.com and satellites. There are also some dirty feet as well.
Maybe you can share more of such examples.

Hello oldtimes.. sorry, I totally missed your post!

If you are into all-natural girls (which means.. hairy bushes, armpits and often even legs ),
most of the girls at Hippie Goddess are barefoot and dirty-soled outdoors:
http://www.hippiegoddess.com/

Also many of the girls at NudeInSF stroll around Frisco naked, barefooted & dirty-soled (the site has not been updated for quite a while, yet.. ):
http://www.nudeinsf.com/

And last but not least.. there is BAREFOOT NUDITY, of course..
http://barefoot-nudity.com/