I use the Edge 810 bluetooth and Iphone (will work with any Bluetooth phone) to upload to Garmin Connect because it is simply more convenient
The Ipad then syncs with Garmin Connect when on WiFi ... if you wish you can cut out the Iphone and link direct to the Ipad via Bluetooth
Unfortunately there is no possible way to connect a non Bluetooth Garmin to an IPad without using a third party, whether this be software or hardware.
You will need to download to a computer and then upload to software (choose one from many) and then again the Ipad can sync to that account