| Humacao to Nuth | 4,459.22 mi (7,176.43 km) |
| Humacao to Oegstgeest | 4,403.18 mi (7,086.24 km) |
| Humacao to Oirschot | 4,435.83 mi (7,138.78 km) |
| Humacao to Oisterwijk | 4,431.84 mi (7,132.36 km) |
| Humacao to Oldebroek | 4,464.72 mi (7,185.28 km) |
| Humacao to Oldenzaal | 4,507.86 mi (7,254.70 km) |
| Humacao to Ommen | 4,486.66 mi (7,220.58 km) |
| Humacao to Oosterend | 4,473.68 mi (7,199.70 km) |
| Humacao to Oosterhout | 4,417.38 mi (7,109.09 km) |
| Humacao to Oosterwolde | 4,482.98 mi (7,214.66 km) |
| Humacao to Oostzaan | 4,421.91 mi (7,116.37 km) |
| Humacao to Opmeer | 4,425.92 mi (7,122.84 km) |
| Humacao to Oss | 4,446.06 mi (7,155.24 km) |
| Humacao to Oud-Beijerland | 4,398.63 mi (7,078.90 km) |
| Humacao to Oudenbosch | 4,402.89 mi (7,085.77 km) |
