Joined: Jul 2007
Posts: 8,603
Likes: 3,532
From: South shore, L.I., NY
Bikes: Trek Emonda SL7, Cannondale Topstone, Miyata City Liner, Specialized Chisel, Specialized Epic Evo
Never done it but maybe find a way to export the RWGPS map/route into Garmin Connect and create a new route. Then and once a route is on Connect, you can use the Connect mobile app to BT port to the device.
I find the BT connection a lot easier to use then having to cable connect the device to my laptop, YMMV