| Foster City to Opole | 5,879.87 mi (9,462.73 km) |
| Foster City to Orzesze | 5,928.84 mi (9,541.54 km) |
| Foster City to Osowa | 5,667.51 mi (9,120.98 km) |
| Foster City to Ostroda | 5,741.28 mi (9,239.70 km) |
| Foster City to Ostroleka | 5,811.31 mi (9,352.39 km) |
| Foster City to Ostrow Mazowiecka | 5,834.09 mi (9,389.06 km) |
| Foster City to Ostrow Wielkopolski | 5,818.89 mi (9,364.60 km) |
| Foster City to Ostrowiec Swietokrzyski | 5,938.03 mi (9,556.34 km) |
| Foster City to Ostrzeszow | 5,835.28 mi (9,390.98 km) |
| Foster City to Oswiecim | 5,945.94 mi (9,569.06 km) |
| Foster City to Otwock | 5,863.24 mi (9,435.98 km) |
| Foster City to Ozarow Mazowiecki | 5,847.76 mi (9,411.05 km) |
| Foster City to Ozimek | 5,885.71 mi (9,472.13 km) |
| Foster City to Ozorkow | 5,831.49 mi (9,384.88 km) |
| Foster City to Pabianice | 5,852.62 mi (9,418.88 km) |
