| San Mateo to Nuth | 5,566.06 mi (8,957.71 km) |
| San Mateo to Oegstgeest | 5,459.86 mi (8,786.79 km) |
| San Mateo to Oirschot | 5,518.89 mi (8,881.80 km) |
| San Mateo to Oisterwijk | 5,511.72 mi (8,870.25 km) |
| San Mateo to Oldebroek | 5,484.47 mi (8,826.40 km) |
| San Mateo to Oldenzaal | 5,519.03 mi (8,882.02 km) |
| San Mateo to Ommen | 5,494.62 mi (8,842.74 km) |
| San Mateo to Oosterend | 5,459.28 mi (8,785.87 km) |
| San Mateo to Oosterhout | 5,499.11 mi (8,849.97 km) |
| San Mateo to Oosterwolde | 5,465.91 mi (8,796.53 km) |
| San Mateo to Oostzaan | 5,458.01 mi (8,783.82 km) |
| San Mateo to Opmeer | 5,445.71 mi (8,764.02 km) |
| San Mateo to Oss | 5,510.61 mi (8,868.47 km) |
| San Mateo to Oud-Beijerland | 5,477.34 mi (8,814.93 km) |
| San Mateo to Oudenbosch | 5,492.77 mi (8,839.75 km) |
