TMZ said the couple have fully settled property and custody issues, including child support for their 1-year-old daughter, Kyla.
No reason for the split was given.
Track is an Army reservist, who served in Iraq. He also is a commercial fisherman and plans to go back to college, TMZ said.
Sarah Palin was presidential candidate John McCain's running mate in 2008.
Celebrity Breakups and divorces of 2014 [PHOTOS]