| Sumter to Opwijk | 4,222.56 mi (6,795.55 km) |
| Sumter to Ostend | 4,164.87 mi (6,702.72 km) |
| Sumter to Oud-Heverlee | 4,245.49 mi (6,832.46 km) |
| Sumter to Oud-Turnhout | 4,247.14 mi (6,835.10 km) |
| Sumter to Oudenaarde | 4,201.22 mi (6,761.21 km) |
| Sumter to Oudenburg | 4,169.11 mi (6,709.54 km) |
| Sumter to Oupeye | 4,288.52 mi (6,901.71 km) |
| Sumter to Overijse | 4,241.18 mi (6,825.52 km) |
| Sumter to Overpelt | 4,267.10 mi (6,867.24 km) |
| Sumter to Paal | 4,261.37 mi (6,858.02 km) |
| Sumter to Peer | 4,270.60 mi (6,872.87 km) |
| Sumter to Pepinster | 4,299.08 mi (6,918.71 km) |
| Sumter to Peruwelz | 4,208.08 mi (6,772.25 km) |
| Sumter to Perwez | 4,256.51 mi (6,850.19 km) |
| Sumter to Philippeville | 4,255.57 mi (6,848.67 km) |
