| Calexico to Opole | 6,016.55 mi (9,682.71 km) |
| Calexico to Orzesze | 6,066.76 mi (9,763.51 km) |
| Calexico to Osowa | 5,824.51 mi (9,373.64 km) |
| Calexico to Ostroda | 5,901.11 mi (9,496.92 km) |
| Calexico to Ostroleka | 5,975.11 mi (9,616.02 km) |
| Calexico to Ostrow Mazowiecka | 5,998.17 mi (9,653.12 km) |
| Calexico to Ostrow Wielkopolski | 5,959.80 mi (9,591.37 km) |
| Calexico to Ostrowiec Swietokrzyski | 6,091.65 mi (9,803.56 km) |
| Calexico to Ostrzeszow | 5,975.58 mi (9,616.77 km) |
| Calexico to Oswiecim | 6,085.50 mi (9,793.66 km) |
| Calexico to Otwock | 6,021.53 mi (9,690.71 km) |
| Calexico to Ozarow Mazowiecki | 6,004.43 mi (9,663.19 km) |
| Calexico to Ozimek | 6,023.69 mi (9,694.18 km) |
| Calexico to Ozorkow | 5,980.35 mi (9,624.44 km) |
| Calexico to Pabianice | 6,000.44 mi (9,656.78 km) |
