Question: Doloroso, Mississippi rests on the US highway that runs for how many miles?

full_context: Document 1: Minot, Mississippi: Minot is an unincorporated community located in northern Sunflower County, Mississippi. Minot is approximately 2 mi north of Parchman and approximately 1.4 mi south of Rome along U.S. Route 49W
Document 2: U.S. Route 61/190 Business: U.S. Highway 61/190 Business (BUS US 61/190, officially 61-X) is a state highway in Louisiana that serves East Baton Rouge Parish. It spans 10.89 mi in a southeast to northwest direction and it is bannered as Business 61/190, with no directional shields. It generally follows the 1940s-1950s alignment of US 61/190 through Baton Rouge.
Document 3: Dockery Plantation: Dockery Plantation was a 25600 acre cotton plantation and sawmill in Dockery, Mississippi, on the Sunflower River between Ruleville and Cleveland, Mississippi. It is widely regarded as the place where Delta blues music was born. Blues musicians resident at Dockery included Charlie Patton, Robert Johnson and Howlin' Wolf. The property was added to the National Register of Historic Places in 2006.
Document 4: River Subdivision (Canadian Pacific Railway): The River Subdivision or River Sub is a railway line along the Mississippi River that runs approximately 124 mi from Saint Paul, Minnesota south to La Crescent. U.S. Highway 61 closely parallels the route between La Crescent and Red Wing,MN. The line is operated by the Canadian Pacific Railway. BNSF Railway operates a complementary St. Croix Subdivision which traces the eastern side of the river in Minnesota and Wisconsin. The two routes share some track between Saint Paul and St. Croix Jct., near Hastings, Minnesota.
Document 5: Clarksdale, Mississippi: Clarksdale is a city in Coahoma County, Mississippi, and seat of the county. The western boundary of the county is formed by the Mississippi River. Located in the Mississippi Delta region, Clarksdale is an agricultural and trading center. It has been home to many blues musicians. Clarksdale is named after John Clark, who founded the city in the mid-19th century.
Document 6: DeSoto County School District: DeSoto County Schools is a public school district based in Hernando, Mississippi (USA) and serving all public school students in DeSoto County in the Memphis metropolitan area. With an enrollment of more than 30,000 students, DeSoto County is the largest school district in the state of Mississippi.
Document 7: U.S. Route 66: U.S. Route 66 (US 66 or Route 66), also known as the Will Rogers Highway, the Main Street of America or the Mother Road, was one of the original highways within the U.S. Highway System. US 66 was established on November 11, 1926, with road signs erected the following year. The highway, which became one of the most famous roads in the United States, originally ran from Chicago, Illinois, through Missouri, Kansas, Oklahoma, Texas, New Mexico, and Arizona before ending at Santa Monica, California, covering a total of 2448 mi . It was recognized in popular culture by both the hit song "(Get Your Kicks on) Route 66" and the "Route 66" television show in the 1960s.
Document 8: U.S. Route 61: U.S. Route 61 (US 61) is the official designation for a United States highway that runs 1400 mi between New Orleans, Louisiana, and the city of Wyoming, Minnesota. The highway generally follows the course of the Mississippi River, and is designated the Great River Road for much of its route. As of 2004, the highway's northern terminus in Wyoming, Minnesota, is at an intersection with Interstate 35 (I-35). Until 1991, the highway extended north on what is now Minnesota State Highway 61 (MN 61) through Duluth to the Canada–US border near Grand Portage. Its southern terminus in New Orleans, Louisiana, is at an intersection with Tulane Avenue at South Broad Street. The highway is often called the Blues Highway because it connects Saint Paul, Minnesota; St. Louis, Missouri; Memphis, Tennessee; the Mississippi Delta, and New Orleans.
Document 9: DeSoto County, Mississippi: DeSoto County is a county located in the U.S. state of Mississippi. As of the 2010 census, the population was 161,252, making it the third-most populous county in Mississippi. Its county seat is Hernando. DeSoto County is part of the Memphis, TN-MS-AR Metropolitan Statistical Area (MSA). It is the second-most populous county in the MSA. The county has lowland areas that were developed in the 19th century for cotton plantations, and hill country in the eastern part of the county.
Document 10: Walls, Mississippi: Walls is a town located in northern DeSoto County, Mississippi, United States, near the Mississippi River, part of the larger region known as "The Delta", and known for its rich, dark soil. As it is in the upper northwest corner of Mississippi, it is in the Memphis, Tennessee metropolitan area. Its ZIP code is 38680. As of the 2010 census it had a population of 1,162, with an estimated population of 1,263 in 2014.
Document 11: North Dakota Highway 46: North Dakota Highway 46 (ND 46) is a 121 mi road in eastern North Dakota, crossing the Red River Valley between Streeter and Oxbow. It parallels and runs about 20 mi south of Interstate 94 (I-94), and is the longest stretch of straight road in North America. I-29 borders it on the east and ND 30 borders it on the west.
Document 12: Doloroso, Mississippi: Doloroso is an unincorporated community in Wilkinson County, Mississippi, United States near the county seat Woodville and the Homochitto National Forest. The community rests on U.S. Route 61.
Document 13: U.S. Route 51: U.S. Route 51 is a south-north United States highway that runs for 1286 mi from the western suburbs of New Orleans, Louisiana to within 100 ft of the Wisconsin–Michigan border. Much of the highway in Illinois and southern Wisconsin runs parallel to or overlaps Interstate 39 (I-39), and much of the route in several states also parallels the Illinois Central Railroad. The highway's northern terminus is between Hurley, Wisconsin, and Ironwood, Michigan, where it ends with a T interchange at US 2. Its southern terminus is Laplace, Louisiana, ending at US 61.
Document 14: Mississippi Delta: The Mississippi Delta is the distinctive northwest section of the U.S. state of Mississippi which lies between the Mississippi and Yazoo Rivers. The region has been called "The Most Southern Place on Earth" ("Southern" in the sense of "characteristic of its region, the American South"), because of its unique racial, cultural, and economic history. It is 200 miles long and 87 miles across at its widest point, encompassing circa 4,415,000 acres, or, some 7,000 square miles of alluvial floodplain. Originally covered in hardwood forest across the bottomlands, it was developed as one of the richest cotton-growing areas in the nation before the American Civil War (1861-1865). The region attracted many speculators who developed land along the riverfronts for cotton plantations; they became wealthy planters dependent on the labor of black slaves, who comprised the vast majority of the population in these counties well before the Civil War, often twice the number of whites.
Document 15: U.S. Route 66 in Missouri: U.S. Route 66 (US 66, Route 66) is a former east–west United States Numbered Highway, running from Santa Monica, California to Chicago, Illinois. In Missouri, the highway ran from downtown St. Louis at the Mississippi River to the Kansas state line west of Joplin. The highway was originally Route 14 from St. Louis to Joplin and Route 1F from Joplin to Kansas. It underwent two major realignments (in the St. Louis and Joplin areas) and several lesser realignments in the cities of St. Louis, Springfield, and Joplin. Current highways covering several miles of the former highway include Route 100, Route 366, Route 266, Route 96, and Route 66. Interstate 44 (I-44) approximates much of US 66 between St. Louis and Springfield.
ground_truth: 1400 mi