MD 198 curves northeast and meets the northern end of MD 197 (Laurel Bowie Road) before crossing the Patuxent River, where the route leaves the city of Laurel and enters Anne Arundel County. The highway, now named Laurel Fort Meade Road, passes one of the main entrances to Laurel Park Racecourse and passes through Maryland City. MD 198 drops to four lanes at its partial cloverleaf interchange with the Baltimore–Washington Parkway (unsigned MD 295) and then becomes a two-lane road a short distance east of the interchange. The state highway crosses the Little Patuxent River, then curves southeast and expands to a four-lane divided highway as it parallels MD 32 (Patuxent Freeway). At the entrance to Tipton Airport, MD 198 curves north and meets MD 32 at a dumbbell interchange. The highway passes through an S-curve then reaches its eastern terminus at an entrance to Fort Meade. The road continues into the military installation as Mapes Road.