| Humble to Oerlinghausen | 5,155.61 mi (8,297.16 km) |
| Humble to Oestrich-Winkel | 5,196.88 mi (8,363.58 km) |
| Humble to Offenburg | 5,246.39 mi (8,443.26 km) |
| Humble to Oftersheim | 5,241.09 mi (8,434.72 km) |
| Humble to Ohrdruf | 5,272.15 mi (8,484.70 km) |
| Humble to Ohringen | 5,282.67 mi (8,501.64 km) |
| Humble to Olbernhau | 5,374.51 mi (8,649.43 km) |
| Humble to Olching | 5,389.33 mi (8,673.29 km) |
| Humble to Oldenburg | 5,099.52 mi (8,206.88 km) |
| Humble to Oldenburg in Holstein | 5,155.10 mi (8,296.33 km) |
| Humble to Olfen | 5,116.00 mi (8,233.41 km) |
| Humble to Olpe | 5,156.27 mi (8,298.22 km) |
| Humble to Olsberg | 5,169.63 mi (8,319.72 km) |
| Humble to Oranienburg | 5,293.23 mi (8,518.63 km) |
| Humble to Ortenberg | 5,225.31 mi (8,409.32 km) |
