| Calera to Opole | 5,061.16 mi (8,145.15 km) |
| Calera to Orzesze | 5,110.68 mi (8,224.85 km) |
| Calera to Osowa | 4,943.01 mi (7,955.01 km) |
| Calera to Ostroda | 5,021.11 mi (8,080.70 km) |
| Calera to Ostroleka | 5,100.25 mi (8,208.06 km) |
| Calera to Ostrow Mazowiecka | 5,122.09 mi (8,243.21 km) |
| Calera to Ostrow Wielkopolski | 5,020.84 mi (8,080.25 km) |
| Calera to Ostrowiec Swietokrzyski | 5,177.48 mi (8,332.35 km) |
| Calera to Ostrzeszow | 5,033.61 mi (8,100.81 km) |
| Calera to Oswiecim | 5,132.41 mi (8,259.82 km) |
| Calera to Otwock | 5,126.65 mi (8,250.55 km) |
| Calera to Ozarow Mazowiecki | 5,106.39 mi (8,217.93 km) |
| Calera to Ozimek | 5,071.28 mi (8,161.44 km) |
| Calera to Ozorkow | 5,062.05 mi (8,146.59 km) |
| Calera to Pabianice | 5,077.52 mi (8,171.48 km) |
