| Sulphur to Oerlinghausen | 5,071.59 mi (8,161.94 km) |
| Sulphur to Oestrich-Winkel | 5,110.16 mi (8,224.01 km) |
| Sulphur to Offenburg | 5,157.83 mi (8,300.72 km) |
| Sulphur to Oftersheim | 5,153.87 mi (8,294.35 km) |
| Sulphur to Ohrdruf | 5,187.63 mi (8,348.68 km) |
| Sulphur to Ohringen | 5,195.65 mi (8,361.59 km) |
| Sulphur to Olbernhau | 5,291.01 mi (8,515.05 km) |
| Sulphur to Olching | 5,301.97 mi (8,532.70 km) |
| Sulphur to Oldenburg | 5,016.81 mi (8,073.78 km) |
| Sulphur to Oldenburg in Holstein | 5,075.03 mi (8,167.47 km) |
| Sulphur to Olfen | 5,031.13 mi (8,096.83 km) |
| Sulphur to Olpe | 5,070.72 mi (8,160.53 km) |
| Sulphur to Olsberg | 5,084.77 mi (8,183.15 km) |
| Sulphur to Oranienburg | 5,212.24 mi (8,388.29 km) |
| Sulphur to Ortenberg | 5,139.47 mi (8,271.18 km) |
