The site is monstorous, if you check it out on google maps we raced on the "cove" of concrete on the west side. It looks smaller on a map but it was huge. I have never seen that much concrete in my life.
The course was designed with the "weeds" in mind so they weren't an issue at all. I will add that the whole course was pretty dust all day long. I ran in the 4th heat, and I would have thought most of it would have been off by then, but it was still coming up as people drove throughout the day. My only guess is that there are no trees/foliage to keep the debris off the surface. :shrug: