| Humacao to Oerlinghausen | 4,580.80 mi (7,372.08 km) |
| Humacao to Oestrich-Winkel | 4,550.99 mi (7,324.11 km) |
| Humacao to Offenburg | 4,548.27 mi (7,319.73 km) |
| Humacao to Oftersheim | 4,577.28 mi (7,366.42 km) |
| Humacao to Ohrdruf | 4,670.59 mi (7,516.59 km) |
| Humacao to Ohringen | 4,618.72 mi (7,433.11 km) |
| Humacao to Olbernhau | 4,784.66 mi (7,700.17 km) |
| Humacao to Olching | 4,704.16 mi (7,570.62 km) |
| Humacao to Oldenburg | 4,563.13 mi (7,343.66 km) |
| Humacao to Oldenburg in Holstein | 4,673.05 mi (7,520.55 km) |
| Humacao to Olfen | 4,525.73 mi (7,283.46 km) |
| Humacao to Olpe | 4,544.22 mi (7,313.22 km) |
| Humacao to Olsberg | 4,572.60 mi (7,358.89 km) |
| Humacao to Oranienburg | 4,772.51 mi (7,680.61 km) |
| Humacao to Ortenberg | 4,597.61 mi (7,399.15 km) |
