Funny how quickly a decent run can turn sketchy in big cities like that.
I once ended up running through some SUPER sketchy areas (in a big US town) and drawing some unwanted attention. Didn't want to return the same way and added over 10 additional km trying to get back to my hotel!! :-)
Ah yes, I remember some early AM runs in Vegas back in the Salomon Canada days. Dodgy folks out at that time of day.