I've been following a similar plan to the NHS C25K plan (different app with slightly different walk/run timings) for a few months now and have progressed from being someone who struggled to run 60 seconds to someone who is just about managing to run 5K. I'm really struggling to get past the 15 minute mark though.... I'm wondering if it's psychological as my pattern of late seems to be run 14 minutes, look at my phone and inwardly sigh that it's 14 minutes again, run for another 60 seconds and then I 'have' to walk for 1 minute, then I run for another 14 minutes inwardly sigh, run for another 60 seconds, walk for 60 seconds and then run the remaining 3-5 minutes until I reach 5K. It's driving me slightly bonkers - even when I know that I've only got another 3 minutes running left I just can't seem to push past my head telling me I need to walk. I've tried varying my route but it doesn't make any difference. Any tips for getting past this?