Hl, DW, me too, thought about it, but have a race tomorrow, a half mara up in God's Country (that's Yorkshire, if you were wondering!) so not got round to it yet.
Not sure how comfortable I'd be running through Newtown on my own, no pack or marshalls (safety in numbers) - OK, I'm exaggerating a little, although a colleague who used to work there still calls it 'Injun Country' I'm sure it's not that bad
. Some of the road junctions could be a bit hairy, though Fiveways for example does have subways, and running through the city centre would be a bit stop-and-start. As the route is still 'subject to change' it might be best to leave it a while.
I presume the race packs will be sent out the usual fortnight before the event.