Quick comment about km splits: I've found that for courses mostly run by diehard runners, km splits are appreciated and understood. For great big popular races they are not, at least in my experience. I fault the RD's for pandering to this demand for miles and not being leaders in helping us all think metric. But I'm guilty too. Years ago I would always try to talk the RD's into using kms. Once in a while they would buy my argument but almost always they'd come back the next year or so and ask for miles to make their complainers happy.