Park Cities Preston Hollow Sports Gallery: The Greenhill Six-Mile Relay September 3, 2021September 3, 2021 Chris McGathey 0 Comments PRN The Greenhill Six-Mile Relay at Norbuck Park featured each runner covering 1.5 miles on a course that includes two hay-bale jumps. Among the competing teams were the Highland Park girls, Hockaday, St. Mark’s, and Jesuit. Read more about the event here. Share this article...EmailFacebookGoogleTwitterLinkedin