Hi Richie9180,
Welcome to the Heartland Owners Forum and to the family. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
The specs list it at 12' 11",,, but if you have front A/C it will probably be about 13' 2 or3". And this can change depending on your tow vehicle. The only way to know for sure is hook up and measure it yourself.
Enjoy the forum.
Jim M