For each route there is:
Garmin route - you will be re-directed to Garmin Connect to allow you to send the route to your device
TCX - will provide a download of the route in TCX format for uploading into other apps
GPX - will provide a download of the route in GPX format for uploading into other apps
Please note: To be able to download TCX or GPX route files you must be logged in to Garmin Connect. You will get an error message if you are not.