Tap any Waypoint on your map, then tap "Navigate to" in the row of buttons along the bottom of the screen.
Your device's default mapping app will open (usually Apple Maps for iPhones and iPads, or Google Maps for Android devices), and provide you with turn-by-turn directions. The directions will start at your current location and end at the closest point along a road or trail to the location of your Waypoint.
You can also build your own Routes that snap to roads and trails to help you navigate without leaving the onX Offroad App. Click here to learn more about using the Route Builder tool.