Ok. I admit it. I've been spending more time at UPS.com tracking my new shoes coming in than I have been working. Finally, my Nike Mayfly's arrived! I put them on while I was getting dinner ready. First impressions are good. They are certainly light. Aesthetically, they have to be just about the ugliest shoe on the planet and to be honest, I kind of like that part. My concern is will they hold up to the rigors of the marathon? Only time will tell. I am running my first run in them tonight. My fallback shoe is my Adidas Addistar Mana.