This 46‑mile Natural Dam Run ride starts at Siloam Springs and culminates with Arkansas’s Natural Dam, a wide, low waterfall that’s one of the easiest scenic stops to reach in the Boston Mountains. The route moves through wooded hills and quiet backroads, with a smooth mix of gentle curves and rolling elevation that gives the ride an easy, unhurried feel. Light traffic and shaded stretches make the miles pass comfortably, and the combination of forest scenery and that unique natural landmark at the end gives the whole run a calm, classic Ozarks character.