About three miles into Grand Forks County, the route passes east of Inkster. Fourteen miles south of Inkster, ND 18 intersects with US 2, a major east–west route of the northern United States. Two miles south of this intersection, ND 18 reaches the city of Larimore.
In approximately three miles of Grand Forks County, the path turns east of Inkster. Fourteen miles south of Inkster, ND 18 connects with US 2, a major east-west route in northern United States. Two miles south of this juncture, ND 18 reaches Larimore.