In my view, one of the best city marathons you can do. No hassle parking. Low key, excellent organisation. Run with parallel events shorter runs and cycle event, so good atmosphere. 500 or so runners so you are not alone until the later stages, when you probably want to be alone. No ridiculous entry fee, website, hidden charges, registration arrangements (i.e not at all like Manchester). The course is varied: urban, estates, country; it passes major pottery factory and Wolves ground. A few inclines, but no real hills.
Good luck to all you first timers. If you want to do another similar event: Leicester is great, you've got a couple of months to get over Wolverhampton. KK