I am a lightly built (8 stone) female with a marathon pb of 3.20. I ran that in a pair of asics ds trainers (14) which am now trying to replace with little luck (in my size anyway) before next marathon in a few weeks. Has anyone run a full marathon in Asics ds racers or is that a ridiculous idea?! The asics ds trainer 15 seems to have more overlays and in a place that may cause me problems (like the 2140's do) so reluctant to try them for such a long distance. I've just bought a pair of Mizuno's for everyday training as they have a more roomy toe box so will see how they go but would also like a lighter weight shoe for races. Any recommendations for a marathon/half marathon shoe would be really appreciated.