Two running milestones

So as you can probably tell from my last post , running has been on my mind a lot lately. I've started running again in the mornings, something I haven't done for almost a year. On Tuesday I ran an easy three miles before work, and on Thursday I ran four. I've fallen head over heels back in love with running and I'm 100% sure now that I want to run a marathon next year. One thing that has really helped is listening to podcasts while I run. I've always liked the idea of listening to a podcast while running, but I was concerned that trying to concentrate on something other than running would make me confused, or that I'd get a few miles in a realise I hadn't been...