| Rock Hill to Odenton (Maryland) | 371.79 mi (598.34 km) |
| Rock Hill to Odessa (Texas) | 1,245.26 mi (2,004.06 km) |
| Rock Hill to Ogden (Utah) | 1,727.99 mi (2,780.93 km) |
| Rock Hill to Oildale (California) | 2,133.02 mi (3,432.76 km) |
| Rock Hill to Ojus (Florida) | 622.94 mi (1,002.52 km) |
| Rock Hill to Okemos (Michigan) | 566.50 mi (911.69 km) |
| Rock Hill to Oklahoma City (Oklahoma) | 930.56 mi (1,497.59 km) |
| Rock Hill to Okmulgee (Oklahoma) | 845.56 mi (1,360.80 km) |
| Rock Hill to Olathe (Kansas) | 808.33 mi (1,300.88 km) |
| Rock Hill to Old Jamestown (Missouri) | 577.87 mi (929.99 km) |
| Rock Hill to Oldsmar (Florida) | 485.86 mi (781.92 km) |
| Rock Hill to Olean (New York) | 512.80 mi (825.27 km) |
| Rock Hill to Olive Branch (Mississippi) | 499.49 mi (803.85 km) |
| Rock Hill to Olivehurst (California) | 2,235.91 mi (3,598.34 km) |
| Rock Hill to Olney (Maryland) | 363.13 mi (584.40 km) |
