I saw this shoe for very cheap, and was just wondering if it was a good road flat for about 5k-half marathon. I want something relatively light, with a low heel, and a flexible racer also. This is my first season at the 10k-half marathon distance, so I'm wanting to know if this will be a good racing flat for it. It says 6.8 ounces, which means in a size 11 it will probably be heavier. The thing is though is that it's only $19.99. very cheap. Does the size fit true on this flat to other ones? If you could give me any info on this flat, i'd appreciate it. Thanks!