It serves as a radial route running west from central Yokohama.

From this eastern terminus, it travels west through the northern limits of the ward, curving slightly to the northwest.

In this ward Route K2 meets its western terminus at Mitsuzawa Junction where it transitions into the Daisan Keihin Road with access also to the Yokohama Shindō.

It was a 0.6-kilometer (0.37 mi) long segment between the route's eastern terminus at Kinkō Junction and the interchange at Yokohama-eki-nishiguchi.

The second a final section of the expressway to be opened was a segment that is located between the interchange at Yokohama-eki-nishiguchi and the route's western terminus at Mitsuzawa Junction.