Many vendors have already raised their tents and are selling bargains along Highway 127 in Fentress and Cumberland Counties.
The yard sale officially begins Thursday.
Rick Cogdill, from Clinton, is selling antique signs and furniture at the South Fentress Community Park along Highway 127.
"I've been doing it [127 yard sale] for 10 years down here and I just enjoy all the people. I make a little money. That helps out too," Cogdill explained.
Fentress County's Chamber of Commerce believes they could see more bargain hunters than usual this year.
"Just website hits, we had 74,000 unique hits in the month of July," said Walt Page, executive director of the chamber of commerce.
That's 16,000 more new web page hits than in July 2009.
Bargain shoppers will be flocking to the World's Longest Yard Sale this week.
The 127 Corridor Sale runs 675 miles along Highway 127 from Gadsden, Alabama to Hudson, Michigan. 127 runs through Cumberland and Fentress County. Vendors will start setting up on Thursday, August 5 and will be selling anything and everything, through Sunday, August 8.
This is the 23rd year for the sale, which started in 1987 as a way to prove the back roads had something to offer, and that the interstate system was not the only mode for travel.
Thousands of vendors set up along the route, and people come from all over the country in search of a good bargain.
The sale is headquartered at the Fentress County Chamber of Commerce in Jamestown, TN. You can get more information, including a map of the sale route, at their website.