I ran a marathon at the weekend, having trained for several months with no injuries. My legs are hurting a bit today (obviously!) but randomly this evening part of my foot is REALLY hurting - it didn't hurt at all yesterday when I was running on it but now it's painful to weight bear (but OK when I'm not standing on it). It also looks like it's starting to come out in a bruise. Wondering if it could be a stress fracture? Does anyone know about how they can present? Just seems odd that it's bruising a whole day after running...