.... so, at that point I was tussling with a v. fit looking woman, I was maybe third, then saw the 2km mark, looked at my watch and thought "Uh oh, I´m doing a Laura", stopped tussling and stopped competing and started feeling tired and suddenly an awful lot of people overtook me and I didn´t try to get in front of them and spent the rest of the race not looking at my watch and deciding that I´d messed up. It was only at about 7 km I realised that all my maths had been wrong and that although I was working hard(ish) I was running in ´miserable failure´style (short stride and not doing anything to correct it) so made a bit of effort over the last 3 km, had a dramatic sprint race at the finish with a bloke who tried so hard to beat me that he knocked over the nice lady giving out the medals and two other competitors in the finish chute ...
Anyway, finished 6th in the 18-39 age group, 11th overall (60 or so women took part) in 46.36. Not a great time, but the fact that I can still run sub-47 while feeling tired and unmotivated and not really trying too hard means that I must be getting fitter.
BTW for kr. 800 (about 6 quid) we got t-shirt (could choose the size), medal, PowerAde sports drink and sandwiches and coffee afterwards. There was also an amazingly generous spot prize list (but I didn´t win anything).
And I ran home afterwards.