I had to step it up a bit to get back above you in the table. I'm going to take a few weeks off the 5k pace train now - there'll be no PB attempts now until Christmas Day I don't think. Unless I get carried away and/or battle it out with [MENTION=18183]big nuts[/MENTION] which I think is on the cards?
How quickly do you reckon you could run a Half? Is your current 1:22 a long standing record just sitting there waiting to be beaten?
With the weather getting cooler I'm sure you can shave a few more seconds off your PB at Christmas.
My Half PB was from last October, just as I was going into my training for the marathon. It was a perfect day for it, the first chilly day we'd had which definitely worked in my favour. I felt amazing at the end though and even managed to get a full sprint on at the finish. So, I'm fairly confident I can beat it providing the conditions are right. Philadelphia does look like a fairly flat course too.