| Sumter to Nuth | 4,293.30 mi (6,909.40 km) |
| Sumter to Oegstgeest | 4,206.45 mi (6,769.63 km) |
| Sumter to Oirschot | 4,255.69 mi (6,848.87 km) |
| Sumter to Oisterwijk | 4,249.69 mi (6,839.22 km) |
| Sumter to Oldebroek | 4,257.46 mi (6,851.72 km) |
| Sumter to Oldenzaal | 4,301.54 mi (6,922.66 km) |
| Sumter to Ommen | 4,276.32 mi (6,882.08 km) |
| Sumter to Oosterend | 4,251.12 mi (6,841.52 km) |
| Sumter to Oosterhout | 4,234.44 mi (6,814.67 km) |
| Sumter to Oosterwolde | 4,260.24 mi (6,856.19 km) |
| Sumter to Oostzaan | 4,217.46 mi (6,787.35 km) |
| Sumter to Opmeer | 4,214.10 mi (6,781.93 km) |
| Sumter to Oss | 4,258.17 mi (6,852.86 km) |
| Sumter to Oud-Beijerland | 4,212.02 mi (6,778.60 km) |
| Sumter to Oudenbosch | 4,222.20 mi (6,794.98 km) |
