scenic half marathon

Looking for advice on a really nice scenic half marathon.

Depends what you scenic, but I've always found this race very nice - along the Thames footpath in the main, between Windsor and Marlow. This one is also suppose to be very good, and always ranks high in the RW top ten. (I have nothing to do with either of these )

Aviemore Highland Half-marathon in October time. Absolutely fantastic race. You are bussed up from Aviemore town centre to the start, you run a loop of Loch Morlich on trails, and then back down into the town on road. Despite being in the Cairngorms, it is a downhill course. It could not be more scenic.

http://www.aviemorehalfmarathon.org/index2.html