TOPO! is a product of National Geographic. The maps appear to be stitched together USGS maps, with the smallest scale being 1:24,000 -- this smallest scale is available only if one buys the add on State series. This scale is marginally adequate for drawing bicycle routes.

Routes are drawn freehand and via’s are added automatically after the route is drawn. There are several choices for placing the via’s, but the one that seems to work best is a uniform distribution over the route with about 10 via’s per mile. Here is a piece of a route with via’s:

The red traces are the original route as drawn freehand, while the blue line is the route containing via’s. Once the via’s are distributed, they can be moved by clicking on the waypoint tool: .

The hack that is used to mark turns is similar to the one used for Pedometer. To mark a waypoint, click on the waypoint tool, and move the two via’s nearest to the desired turn into coincidence at the turn. This is aided by displaying the “waypoint list,” illustrated below, which shows the latitude and longitude of each point. The waypoint tool also shows this information, and it is fairly easy to drag two points into approximate coincidence -- they can differ a bit in their last decimal places.

The file is exported as a .txt file from the “Handhelds” menu. As with Pedometer, there are no road names. The Edit cue sheet produced by CueSheetMaker from the .txt file is:

The edited cue sheet is:

The total mileage should be close to 17.5. The 17.21 shown is not correct. This seems to be due to the stitching together of the maps which causes a slight discrepancy in distances.