I just started wearing the VFF Bikila LS a couple of weeks ago, and at first was taking it easy in them, not running more than a few miles. But when I started feeling really comfortable, my calves weren't hurting, and my feet feel great, I started going on longer runs in the VFF's. My longest run was 10K on asphalt and concrete. I really started to hate every other shoe I owned, and began running more often in the Bikilas.
Then, with the opportunity to run a 50K (actually it's 54K) ultra on stone dust, dirt, and asphalt in Van Cortlandt park, The Bronx, NYC on Saturday Nov 5, I decided to give it a go.
I brought a regular pair of shoes with me, and stashed them while I ran in the VFF's.
I had no problems at all; as a matter of fact, I felt really good. Only during my last 10K did I begin to develop a hot spot on my right big toe, but it didn't bother me enough to warrant changing into the regular shoes.
So, I have run a total of 88 miles in my VFF Bikila LS, and am loving every minute of it. I have already run through snow (the Oct 29-30 snowstorm in NJ), with only sand (the beach) remaining to be explored.
I have always been a flat-footed, over-pronator, so I never thought I could adjust to minimalist running so easily. What really gave me the inspiration to try VFF's was Christopher McDougall's "Born to Run", although he seems to be more of a totally barefoot advocate. I think that the VFF's are the best thing that ever happened to my feet!