Not quite a PB but only a minute slower than it, and 10 minutes faster than my last 10k race back in May. And I didn't walk any of it (except for a few steps to take a drink).
It was a hot day, and I ran out of legs in the last km, meaning that my pace dropped by about 1 min/km, rather than having the finishing kick I had planned. Maybe if I hadn't been recovering from a cold I would have managed a minute faster.
But I'm still very pleased, and considering my original question was whether I could hold a 8 min/km pace, it shows I can.
Thanks for the enthusiastic replies. Much appreciated.
Unfortunately I seem to be fighting a cold this week. I've rested a couple of days, but tonight's 4.3k felt tough.
I'll see how it goes, but at the moment I'm thinking the slightly more conservative approach might be the best one. Maybe I'll start at 7:40ish pace, and if that feels good at half way I will up it to 7:30, then as fast as possible in the home straight. I'd like to get 75 mins, but would be delighted with anything under 77.