I have put the idea of a sub 30mins 5k to bed for the time being and have been working on my stamina. So today I managed a sub 60 mins 8k. Not bad sincenough I only graduated at the beginning of June. I am now running for 60 mins 3 times a week minimum with swimming or interval training in between. Not sure how long I can keep it up though. As I have time at the min due to the long summer holidays.