Use your GPS as intermediate storage for the track. See instructions in previous section. The track will be downloaded. You'll notice that these 'Exchanged' routes only have two waypoints, at start and end. You can display as many routes as you like at the same time.
All routes show as dashed lines.
Only one route will be highlighted yellow. That will be the last route you checked. If the wrong route is highlighted, simply uncheck, then check the one you want. All routes will be displayed on the 3D map. But, I like to know the names of landmarks along the way, even though I'm not planning on flying over them.