How far is it from Pittsburgh pa to smithfield North Carolina?

503 miles

1. Take I-76 Pennsylvania TURNPIKE (toll road) - EAST, from Pittburgh, to I-70 EAST to BALTIMORE and WASHINGTON at EXIT 161 (the BREEZEWOOD exit).
2. Continue on I-70 EAST to I-270 SOUTH to WASHINGTON at EXIT 53 in Maryland.
3. Take I-270 SOUTH to I-95 SOUTH to RICHMOND, via I-495 CAPITAL BELTWAY - SOUTH towards Northern Virginia to bypass WASHINGTON, D.C. (EXIT 57A off I-495 in VIRGINIA to get onto I-95 SOUTH to RICHMOND).
4. Take I-95 SOUTH to Smithfield, via I-295 SOUTH (EXIT 84A off I-95) to bypass RICHMOND-PETERSBURG.