My watch seemed to be working fine until after I had finished at which point it crashed. I thought it had run out of batteries but didn't really care as it seemed to have recorded the run. Now I've looked at it again it has about half battery life remaining and no record of the run and the marathon isn't uploading. This is particularly frustrating as during my last marathon it switched off halfway through - I assumed due to the rain. it's so unreliable! Can I do anything to get the details of my last marathon back?