Shoe Review rules… wait rules for shoe reviews? Well… yes, one of the cardinal rules for shoe reviews was to never directly compare competing models of shoes. The Carbon X begs a comparison, because even though we still have not heard the last word about carbon plated marathon shoes (and the track equivalent super spikes), inquiring minds want to know. The Carbon X was developed to race long distances with an eye on the fuel tank. You know, cover the distance at speed while conserving energy to manage the distance, and by distance I mean the Marathon. So how did it go? Check back to see how things progress…