I did this race three times -- while managed by BRIN -- and ran the 5k (no longer offered) each time. This course is incredibly flat and fast. And at the end of the race, there was delicious BBQ dinner for all. This is a good race. As a dusk run (Harvest MOON) it means it can get dark while you're out there, so plan accordingly.
The course -- The course is an out-and-back course on the MoPac trail. This trail is incredibly flat, and that makes for a fast race. The surface is a nice soft crushed gravel and the trail is wide enough to pass (or be passed), so you can really push yourself. On my last time running this race, I was able to push myself to a new 5k PR.
Aid stations -- Being a 5k/10k (and now only 10k) the aid stations were basic, but that is really all you need. This race is not a "full-service" race. It is meant to go fast. So the aid stations had water and Gatorade. No frills, no problems.
Swag -- One of my favorite shirts, orange with black writing and super comfy. I wear them all the time. No medal -- but it's just a 5/10k, so did you really earn one if you didn't place? So no problem there.
Meal -- After the race, there is delicious BBQ sandwiches, beer and a full party with a band. This comes with the registration, and it is awesome. Why not celebrate a fun night run with some delicious food?