| Chalco to Opole | 4,950.86 mi (7,967.65 km) |
| Chalco to Orzesze | 5,001.53 mi (8,049.19 km) |
| Chalco to Osowa | 4,789.05 mi (7,707.24 km) |
| Chalco to Ostroda | 4,867.63 mi (7,833.69 km) |
| Chalco to Ostroleka | 4,945.25 mi (7,958.62 km) |
| Chalco to Ostrow Mazowiecka | 4,968.13 mi (7,995.43 km) |
| Chalco to Ostrow Wielkopolski | 4,900.49 mi (7,886.57 km) |
| Chalco to Ostrowiec Swietokrzyski | 5,045.55 mi (8,120.03 km) |
| Chalco to Ostrzeszow | 4,915.18 mi (7,910.21 km) |
| Chalco to Oswiecim | 5,021.87 mi (8,081.92 km) |
| Chalco to Otwock | 4,983.14 mi (8,019.59 km) |
| Chalco to Ozarow Mazowiecki | 4,964.31 mi (7,989.29 km) |
| Chalco to Ozimek | 4,959.42 mi (7,981.41 km) |
| Chalco to Ozorkow | 4,930.61 mi (7,935.06 km) |
| Chalco to Pabianice | 4,948.94 mi (7,964.55 km) |
