US-400 and US-50 enter Kansas west of Coolidge.
They go together through Garden City, where it intersects US-83.
They separate at Dodge City.
This is where it intersects US-56 and US-283.
It goes southeast from Dodge City and first intersects US-54 at Mullinville.

US-400 and US-54 start going together at Mullinville.
This goes through Greensburg, Pratt and Kingman before going into Wichita.
While in Wichita, US-400 and US-54 intersect Interstate 235.
It goes along with US-81 and Interstate 135.
K-96 provides a short freeway connection to Interstate 35, which is also the Kansas Turnpike.
At Augusta, US-400 and US-54 goes along with US-77.
US-400 separates at Haverhill.

US-400 goes east through several small towns before turning southeast to go through the Fredonia area.
It intersect US-75 at Neodesha.
After going along with US-75, it turns east.
It intersects U.S. Route 169 near Morehead and then US-59 near Parsons.
Then it intersects US-69 south of Pittsburg.
It then turns south with US-69.
At Crestline, it follows US-69A south to Riverton.
US-400 then turns east with US-166 at Baxter Springs.
The two highways go eastward into Missouri.
US-400 and US-50 enter Kansas west of Coolidge. They go together through Garden City, where it intersects US-83. They separate at Dodge City. This is where it intersects US-56 and US-283. It goes southeast from Dodge City and first intersects US-54 at Mullinville.
US-400 and US-54 start going together at Mullinville. This goes through Greensburg, Pratt and Kingman before going into Wichita. While in Wichita, US-400 and US-54 intersect Interstate 235. It goes along with US-81 and Interstate 135. K-96 provides a short freeway connection to Interstate 35, which is also the Kansas Turnpike. At Augusta, US-400 and US-54 goes along with US-77. US-400 separates at Haverhill.
US-400 goes east through several small towns before turning southeast to go through the Fredonia area. It intersect US-75 at Neodesha. After going along with US-75, it turns east. It intersects U.S. Route 169 near Morehead and then US-59 near Parsons. Then it intersects US-69 south of Pittsburg. It then turns south with US-69. At Crestline, it follows US-69A south to Riverton. US-400 then turns east with US-166 at Baxter Springs. The two highways go eastward into Missouri.
U.S. Route 400