| San Marcos to Opole | 6,033.13 mi (9,709.39 km) |
| San Marcos to Orzesze | 6,083.15 mi (9,789.88 km) |
| San Marcos to Osowa | 5,836.62 mi (9,393.14 km) |
| San Marcos to Ostroda | 5,912.73 mi (9,515.61 km) |
| San Marcos to Ostroleka | 5,985.98 mi (9,633.51 km) |
| San Marcos to Ostrow Mazowiecka | 6,009.01 mi (9,670.57 km) |
| San Marcos to Ostrow Wielkopolski | 5,975.43 mi (9,616.53 km) |
| San Marcos to Ostrowiec Swietokrzyski | 6,104.80 mi (9,824.73 km) |
| San Marcos to Ostrzeszow | 5,991.36 mi (9,642.16 km) |
| San Marcos to Oswiecim | 6,101.57 mi (9,819.52 km) |
| San Marcos to Otwock | 6,033.62 mi (9,710.17 km) |
| San Marcos to Ozarow Mazowiecki | 6,016.84 mi (9,683.16 km) |
| San Marcos to Ozimek | 6,040.01 mi (9,720.45 km) |
| San Marcos to Ozorkow | 5,994.36 mi (9,646.99 km) |
| San Marcos to Pabianice | 6,014.69 mi (9,679.71 km) |
