I'll preface this post by saying that I've never ran an organized 10k before. For various reason really, but I either couldn't justify the cost or the training routine to run it. I'm more of a spur of the moment, let's run the beach or hike for 15k kind of guy. I'll be running in my favorite old NB minimalist shoes. They work great for me because I have wide feet (hence my handle) and some of the minimalist shoes are too narrow. Plus I got them on sale about 4 years ago.