I ran this race last year and it was a great course, lots of fun [here are 2011 results]. Portions of the course are the same as the Greenway Challenge 5k. From the race organizers:
3.1 mile undulating course that starts and finishes on the beautiful campus of the Black Mountain Neuro-Medical Treatment Center.
Entry Fee: $20 early registration until October 1st.
$25 after October 1st.
$5 discount for seniors (60 & up).
Online registration is available at Active.com, or you may download a Mountain Splendor 5k Brochure. For more information, visit the race website.