The tilted "S" in most of those is dreadful. It's all I can look at when I look at them. Additionally, many of them require "work" to read (140, 130, 135). Nube

The tilted "S" in most of those is dreadful. It's all I can look at when I look at them. Additionally, many of them require "work" to read (140, 130, 135). Nuber 89 is the only one that is even borderline useful. There is just too much going on in all of them. You want a logo that looks good small as well as large, so you need clean lines and not a lot of detail. The silohuette of the runner is a nice idea, but I'm not sure it holds up at different sizes. I'd go for a simpler image like a ball or a footprint or something.