Computational Marathoning
I'm not planning on running a marathon in a long time, but a recent paper - Metabolic Factors Limiting Performance in Marathon Runners by Benjamin Rapoport - may prove quite useful to those who do or when I do finally get around to running another marathon.
In short, Rapoport has devised a series of calculations that can be used to help you optimize your carbohydrate consumption and race pace to achieve a maximal-for-you performance over the full marathon distance. A brief explanation can be found in this Runner's World article
