If you use Tyre to Travel, you don't need to use any file converters. You can plan a route by either entering a starting and ending point and the program will find the shortest route (and you can exclude highways if you want, so the program will give you the less direct route). You can then drag the route anywhere you want between those two endpoints. You can also just double click anywhere on the map to plan the most meandering circuitous route you want, and the program will store up to 1000 waypoints for each route. The program has many different features, including a reverse feature where you can flip the starting and ending points. You can also easily calculate the distances and times between individual waypoints right on the map, to help you in planning a trip.
You can save the route in multiple formats right in the program, without needing a separate file converter. The formats include .gpx files, Tom Tom files, .kml files, and .kmz files.
To load it onto a GPS or phone, you just drag and drop the route from wherever you saved it onto your device (provided your device has the ability to read an imported file). If you use a smart phone as a GPS, you just need a program to read the file, like OsmAnd. Dragging and dropping works just fine for any Garmin GPS that has the Trip Planner feature. Once it's on the device, you just open it; the device will recognize the route and give you turn by turn directions. If you're the kind of rider who likes to have a cue sheet with mileages/times between waypoints and written directions, the program will print out a "road book", listing all that info.
I've attached a photo of a route I just rode yesterday, created on Tyre in about 10 minutes. Clicked a bunch of points on the map to make a really wandering route, dragged it onto my Garmin 2455, and it was done. I also dragged it onto my phone as a backup. You open the .gpx file with OsmAnd, and it works just like it does on the GPS.
If you miss a turn, the device will automatically recalculate the route to get you back on track. If you find you can't go down a particular road (like for road construction), you can skip ahead on the list of waypoints to work around the road closure.
I've used both Google Maps and Tyre to create routes; Tyre has a much better user interface. In fact, it was designed by a motorcyclist with an eye towards a motorcyclist's needs when route planning.
"No matter where you go, there you are."