I heard about BTR/barefoot running and got my first Vibram Fivefingers. run for 6 months in 2011 and I changed to huaraches around mid 2012. eventually I switched to almost all barefoot for the last 20 months most of my training are barefoot in parks which more or less barefoot friendly. Some races at 10k(46:30min), 21k(1:46hr) barefoot and a 42k(4:14hr) with few sticky tape under my feet. I'm very happy with barefoot but there are times that I need to put on some shoes, my luna e.g. some races with rougher surface, longer runs that exceed 21-25k+ (depend on how easy the routes are) and because I mostly train barefoot, ≤21k. when I put on my huaraches I just couldn't get that feeling of smooth/light landing, movements. I couldn't run fast or run well when I use shoes probably because I always rely on "feetback" from my soles to move my body. (barefoot and barefoot shoes is very different feeling) Has anyone encounter the same problem? I plan to run 2nd marathon this November hopefully 4:00hr but I really felt I can't run well with shoes now. If the whole 42k is barefoot friendly like my 1st I could just run barefoot or use tape again but it's unlikely Should I train more with shoes? Should I forget about Sub 4 and slowly learn to handle rough surface? Any advice?