Any recommendations?
I've been told in a similar thread:
Brass Monkey - York in Jan
Village Bakery - Wrexham in Feb
Wilmslow - Manchester area in March
Also, I did Liverpool in March this year and that was flat.
Glasgow half (Great Scottish Run, but not part of the BUPA series) in September. Only a couple of very small lumps, and a great atmosphere.
Amsterdam!
Flatter than a flat thing that's been run over by a steamroller, and you get to finish in the Olympic stadium
I'd vote for Wilmslow in March, although I may be a little biased as it's local to me and the only HM I've ever done. In its favour is that it is mostly flat with a few very minor bumps to remove the monotony of a completely flat course. The scenery is pretty and the weather's always been nice whenever I've run it.