To export a weather route as a GPX File, you will need to calculate a weather route first.
Once you have calculated a weather route, click on 'Tables', top right of the screen.
Click on the > arrow buttons until you see 'Export.'
Choose which route you would like to export.
Click on 'Export as GPX.'
Your phone will then give you options on how you would like your GPX file to be displayed.
Choose an App to display it, for example 'iNavX.'
Follow your choice of App to view the exported GPX file.