spur before highways exit the city of Sumter and the frontage roads reappear along the freeway. The U.S. Highways diverge at their partial cloverleaf interchange with the eastern end of US 76 Business (Liberty Street); US 76 heads east as Florence Highway while US 378 continues southeast along the freeway to East Sumter, where it ends at the eastern terminus of SC 763 (Myrtle Beach Highway). US 378 continues east as Myrtle Beach Highway, a four-lane divided highway. The highway crosses the Black River and intersects SC 527 (Brick Church Road) at McBrides Corner. US 378 has an acute junction with SC 53 (Narrow Paved Road) and a diamond interchange with I-95 before entering Clarendon County, where the route follows Clarence Coker Highway. The highway becomes undivided as it enters the town of Turbeville. US 378 runs concurrently with US 301 along four-lane undivided Main Street, which intersects SC 58 (Gamble Street) one block north of the US 378–US 301 junction. The two U.S. Highways split near the northern end of town, with US 378 continuing east as a four-lane road with center turn lane. The highway enters Florence County, where its name changes to Turbeville Highway, then returns to the county line and runs atop the southern boundary of Florence County. During this stretch, the county to the south of the highway becomes Williamsburg County. Soon after US 378 fully enters Florence County, the highway intersects SC 341 (Olanta Highway). The two highways briefly run together before SC 341 continues straight concurrent with US 378 Business on Lake City's Main Street while US 378 splits northeast to bypass Lake City. North of the town, the U.S. Highway has a diamond interchange with US 52 (Ron McNair Boulevard). US 378 crosses over CSX's Charleston Subdivision before collecting the eastern end of US 378 Business (Myrtle Beach Highway). US 378 continues northeast as Myrtle Beach Highway. The highway crosses the Lynches River and curves southeast and then east through the hamlet of Hannah. SC 51 (Pamplico Highway) joins US 378 on a tangent curve at Salem and follows the U.S. Highway east to Kingsburg, where SC 51 turns south onto Kingsburg Highway and SC 41 joins the U.S. Highway as it curves northeast U.S. Highway 378 reduces to two lanes near Capitola Road in Johnsonville. and crosses the Great Pee Dee River into Marion County. The two highways curve southeast and