Stevie G - I think the quirky distance is the appeal (a bit like the Ricky Road run being 9 miles...)
Slowkoala - this is also my training route. There's a sharp short hill at the beginning and after that it is a slow up hill and fast downhill via Harrow School (it starts on the school's playing field so you can stand at the start and admire the school and its facilities) - very friendly even at the back, which is where I will be this year.
I thought there was a route map for the race but there isn't
Yes
The slow one up is Peterborough Road up to Harrow on the Hill High Street but then you go down London Road (I'm reading this off of my Garmin Connect page)
Hope that helps!
Slowkoala
Route map now up on website
http://www.metros.org.uk/