Question: This outdoor second-hand sale is held annually along a north–south U.S. Highway that is how long?

Context articles: U.S. Route 491
U.S. Route 127
U.S. Route 52 in South Carolina
U.S. Route 53
U.S. Route 13
Computer bridge
U.S. Route 9 in New York
400-Mile Sale
Roller Coaster Fair
127 Corridor Sale

U.S. Route 491 (US 491) is a north–south U.S. Highway serving the Four Corners region of the United States.
 One of the newest designations in the U.S. Highway System, it was created in 2003 as a renumbering of U.S. Route 666 (US 666).
 With the 666 designation, this road was nicknamed the "Devil's Highway" because of the significance of number 666 to many Christian denominations, which is believed by some that 666 is the Number of the Beast.
 This Satanic connotation, combined with a high fatality rate along the New Mexico portion, convinced some people the highway was cursed.
 The problem was compounded by persistent sign theft.
 These factors led to two efforts to renumber the highway, first by officials in Arizona, later in New Mexico.
 There have been safety improvement projects in recent years, and fatality rates have subsequently decreased.
U.S. Route 127 (US 127) is a 758 mi north–south U.S. Highway in the eastern half of the United States.
 The southern terminus of the route is at US 27 in Chattanooga, Tennessee.
 The northern terminus is at Interstate 75 (I-75) near Grayling, Michigan.
 Since 1987, it has been the core of the annual World's Longest Yard Sale, also known as the Highway 127 Corridor Sale (127 Yard Sale), which now stretches 690 mi from Addison, Michigan, to Gadsden, Alabama.
 The sale, held every August, was started to demonstrate that the older U.S. Highway System has something to offer that the Interstate Highway System does not.
U.S. Route 52 (US 52) is a 159.7 mi north–south U.S. Highway that travels from Charleston to the North Carolina state line near Cheraw.
 It serves as a strategic highway through the central part of the state.
 Though an even-numbered U.S. Highway, which are typically signed east–west, it is signed north–south in South Carolina.
 In some other states along its route, it "is" signed east–west.
 The South Carolina segment is signed such that U.S. 52 north corresponds to the general westward direction of the highway, and "vice versa".
U.S. Route 53, or U.S. Highway 53 (U.S. 53), is a north–south U.S. highway that runs for 403 miles (649 km) from La Crosse, Wisconsin to International Falls, Minnesota.
 It is the primary north–south route in northwestern Wisconsin, serving as a vital link between I-94 at Eau Claire, Wisconsin and the city of Duluth, Minnesota.
 The entire route from Eau Claire to the city limits of Superior, Wisconsin is a four lane divided highway.
 The highway's northern terminus is at the Fort Frances-International Falls Bridge in International Falls, Minnesota, at the Canada–US border.
 Its southern terminus is in La Crosse, Wisconsin, at U.S. Highway 14.
U.S. Route 13 (US 13) is a north–south U.S. highway established in 1926 that runs for 517 mi from Interstate 95 just north of Fayetteville, North Carolina to the northeastern suburbs of Philadelphia, Pennsylvania, in Morrisville.
 In all, it traverses five states in the Atlantic coastal plain region, following the Atlantic coast more closely than does the main north–south U.S. highway of the region, U.S. Route 1.
 Its routing is largely rural, the notable exceptions being the Hampton Roads area and the northern end of the highway in Delaware and Pennsylvania.
 It is also notable for being the main thoroughfare for the Delmarva Peninsula and carrying the Chesapeake Bay Bridge–Tunnel to it in Virginia.
Computer bridge is the playing of the game contract bridge using computer software.
 After years of limited progress, since around the end of the 20th century the field of computer bridge has made major advances.
 In 1996 the American Contract Bridge League (ACBL) established an official World Computer-Bridge Championship, to be held annually along with a major bridge event.
 The first championship took place in 1997 at the North American Bridge Championships in Albuquerque.
 Since 1999 the event has been conducted as a joint activity of the American Contract Bridge League and the World Bridge Federation.
 Alvin Levy, ACBL Board member, initiated this championship and has coordinated the event annually since its inception.
 The event history, articles and publications, analysis, and playing records can be found at the official website.
U.S. Route 9 (US 9) is a part of the U.S. Highway System that runs from Laurel, Delaware, to Champlain, New York.
 In New York, US 9 extends 324.72 mi from the George Washington Bridge in Manhattan to an interchange with Interstate 87 (I-87) just south of the Canada–United States border in the town of Champlain.
 US 9 is the longest north–south U.S. Highway in New York; additionally, the portion of US 9 in New York accounts for more than half of the highway's total length.
The 400-Mile Yard Sale, sometimes referred to as the Highway 68 Yard Sale, is an outdoor second-hand sale held annually for four days, beginning in the first weekend of June.
 It takes place along U.S. Route 68 (US 68) in the US state of Kentucky.
 It is held in almost all areas along the US 68 corridor from the east side of Paducah through central Kentucky, and ending at Maysville.
The Roller Coaster Yard Sale, sometimes referred to as the Roller Coaster Fair, is an outdoor second-hand sale held annually for three days beginning the first Thursday in October.
 It takes place along several US and state routes in southern Kentucky and northern middle Tennessee.
The Highway 127 Corridor Sale, also called the 127 Yard Sale, is an outdoor second-hand sale held annually for four days beginning the first Thursday in August along U.S. Route 127 (US 127).
 The event has been promoted as "The World's Longest Yard Sale."