| Pirot to Opole | 563.45 mi (906.79 km) |
| Pirot to Orzesze | 516.42 mi (831.10 km) |
| Pirot to Osowa | 800.89 mi (1,288.91 km) |
| Pirot to Ostroda | 738.49 mi (1,188.48 km) |
| Pirot to Ostroleka | 686.64 mi (1,105.03 km) |
| Pirot to Ostrow Mazowiecka | 667.36 mi (1,074.02 km) |
| Pirot to Ostrow Wielkopolski | 627.71 mi (1,010.19 km) |
| Pirot to Ostrowiec Swietokrzyski | 540.51 mi (869.87 km) |
| Pirot to Ostrzeszow | 610.93 mi (983.20 km) |
| Pirot to Oswiecim | 501.74 mi (807.47 km) |
| Pirot to Otwock | 622.41 mi (1,001.68 km) |
| Pirot to Ozarow Mazowiecki | 631.74 mi (1,016.69 km) |
| Pirot to Ozimek | 558.88 mi (899.43 km) |
| Pirot to Ozorkow | 628.02 mi (1,010.71 km) |
| Pirot to Pabianice | 605.80 mi (974.93 km) |
