| Longford to Orzesze | 1,150.39 mi (1,851.38 km) |
| Longford to Osowa | 1,059.83 mi (1,705.64 km) |
| Longford to Ostroda | 1,128.14 mi (1,815.56 km) |
| Longford to Ostroleka | 1,202.07 mi (1,934.55 km) |
| Longford to Ostrow Mazowiecka | 1,220.11 mi (1,963.58 km) |
| Longford to Ostrow Wielkopolski | 1,076.40 mi (1,732.30 km) |
| Longford to Ostrowiec Swietokrzyski | 1,238.89 mi (1,993.80 km) |
| Longford to Ostrzeszow | 1,086.18 mi (1,748.04 km) |
| Longford to Oswiecim | 1,172.65 mi (1,887.20 km) |
| Longford to Otwock | 1,207.38 mi (1,943.08 km) |
| Longford to Ozarow Mazowiecki | 1,186.45 mi (1,909.40 km) |
| Longford to Ozimek | 1,115.01 mi (1,794.44 km) |
| Longford to Ozorkow | 1,129.71 mi (1,818.09 km) |
| Longford to Pabianice | 1,140.33 mi (1,835.19 km) |
| Longford to Parczew | 1,282.55 mi (2,064.06 km) |
