This was the same route I did on Monday. The first km, which trends slightly downhill, was really really hard. I was at 6:35 pace for the first km - I've been known to do that stretch in 5:55 (although admittedly when I knew I was taking the downhill route at the end of the road, not the massive uphill in the opposite direction as I was today, so I was deliberately holding some in reserve). I was quite scared of how I was going to cope with the big hills given the poor start, but I found my rhythm and got through pretty well. 6:45 and 6:38 for the next 2 km, which had some nasty nasty hills in them. The 4th km I did in 6:07, but that's down some very nice hills. What goes up, must come down!
There's a long road ahead to get my running fitness back, but as they say, the longest journey starts with a single step. That's enough philosophy for today, I've got a busy work day ahead. Happy running one and all.