Round Rock’s third annual Swim/Run r-AQUA-thon takes place at the Clay Madsen Recreation Center. This swim/run event is fun for beginners and seasoned athletes. The Round Rock r-AQUA-thon offers an encouraging atmosphere for beginner athletes while also providing a consistent course for those seasoned athletes wishing to track improvements or get in a sprint workout. This Swim/Run event is designed to be fun, relaxed and non-intimidating for ages 7+. It starts and finishes at the Clay Madsen Recreation Center.