U.S. Route 287

U.S. Route 287
U.S. Route 287
	US 287 highlighted in red
Route information
	Auxiliary route of US 87
Length	1,791 mi (2,882 km)
Existed	1935–present
Major junctions
South end	US 69 / US 96 / SH 87 in Port Arthur, TX
	I-45 at Ennis, TX; I-35E at Waxahachie, TX; I-20 at Arlington, TX; I-30 at Fort Worth, TX; I-40 / US 87 at Amarillo, TX; I-70 at Limon, CO; I-25 / US 87 at Denver, CO; I-80 at Laramie, WY; I-90 at Three Forks, MT; I-15 at Helena, MT;
North end	US 89 in Choteau, MT
Location
Country	United States
States	Texas, Oklahoma, Colorado, Wyoming, Montana
Highway system
	United States Numbered Highway System; List; Special; Divided;

U.S. Route 287 (US 287) is a north–south (physically northwest–southeast) United States highway. At 1,791 miles (2,882 km) long, it is the second longest three-digit U.S. Route, behind US 281. The highway is broken into two segments by Yellowstone National Park, where unnumbered park roads serve as a connector.

The highway's northern terminus is in Choteau, Montana, 100 miles (160 km) south of the Canadian border, at an intersection with US 89. Its southern terminus (as well as those of US 69 and US 96) is in Port Arthur, Texas at an intersection with State Highway 87 (SH 87), five miles (8 km) up the Sabine River from the Gulf of Mexico. It intersects its parent route US 87 twice, overlapping it from Amarillo to Dumas, Texas, and then crossing it in Denver, Colorado.