After my wife got her VFFs and I read up a little on barefoot running, I decided I wanted a pair too. We both have had issues w/ traditional running in the past, so I was excited about the possibility of injury free running. I got mine in November, and did a short run to the end of the street and back on the very first day. My wife had told me about a lot of posts here on beginners overdoing it, so I was determined to start slowly.
Over the course of a month or two I began to run one full block.. then two, and up to a full mile. I was maybe 2 months in before I broke a mile. To this point, I experienced a lot of muscle pain in my calves, and a little on the top of my right foot. The calf pain was not at all like injury pain, just the pain of using muscles that weren't used to the demand you were putting on them. Same w/ the top of my foot. That dissipated after time.
Once I broke the one mile barrier, I started increasing my runs a little more aggressively. I went from one mile to two miles pretty quickly. At this stage, the only discomfort I recall is that my achiles tendons felt pretty sore. I paid close attention, and kept on running, and it never got any worse. I attributed it to them doing a job that they had never really done before in my life.
Fast forward to a month ago. At this point, I was doing runs up to 4 miles. No more calf pain. No more achiles pain. I thought I'd successfully completed the break in stage, and was ready to go full force. I even started running fully barefoot. One day, though, I noticed that my left arch was really aching. It was just after one of my 4 mile runs. The pain was still there the next morning. I cancelled a run or two. For the first time since I started, I was feeling pain that felt more like actual injury pain, and not just workout pain. This was just before a 1 week vacation in CA, so I decided to stop running until we got back. During our trip, we did lots of walking and standing. The pain in my left arch got so bad at times that I began to limp. I made a point to stay off of my feet as much as I could, and stepped very lightly the rest of the time.
Thinking I'd overdone it, I vowed that I would not run again until I experienced a full week w/ no pain. 1 week after our vacation, I had my first full pain free day. A week after that, I ran for the first time. That was this monday (5 days ago). I ran a single mile. Everything felt fine. Wednesday, I ran a second time, again going only a mile. Again, everything felt fine. Thursday morning, I woke up, and my arch was hurting again. I did not run today. My arch is still hurting. A search for "arch pain" on these forums didn't get me much. I'm 3 chapters into Born to Run. I'm hoping to find some information on what may be going on with me. I'm really excited to be into barefoot running, and hope to continue, but I want to avoid injury. Anyone have any words of advice or experience that could help me understand what's going on?