| San Marcos to Nuth | 5,677.05 mi (9,136.32 km) |
| San Marcos to Oegstgeest | 5,572.36 mi (8,967.85 km) |
| San Marcos to Oirschot | 5,630.76 mi (9,061.83 km) |
| San Marcos to Oisterwijk | 5,623.66 mi (9,050.41 km) |
| San Marcos to Oldebroek | 5,602.88 mi (9,016.96 km) |
| San Marcos to Oldenzaal | 5,640.15 mi (9,076.95 km) |
| San Marcos to Ommen | 5,615.02 mi (9,036.50 km) |
| San Marcos to Oosterend | 5,580.88 mi (8,981.56 km) |
| San Marcos to Oosterhout | 5,610.23 mi (9,028.79 km) |
| San Marcos to Oosterwolde | 5,588.16 mi (8,993.27 km) |
| San Marcos to Oostzaan | 5,573.08 mi (8,969.00 km) |
| San Marcos to Opmeer | 5,562.29 mi (8,951.64 km) |
| San Marcos to Oss | 5,624.48 mi (9,051.73 km) |
| San Marcos to Oud-Beijerland | 5,587.82 mi (8,992.73 km) |
| San Marcos to Oudenbosch | 5,602.53 mi (9,016.40 km) |
