| Delfzijl to Orzesze | 551.12 mi (886.94 km) |
| Delfzijl to Osowa | 476.05 mi (766.14 km) |
| Delfzijl to Ostroda | 535.96 mi (862.55 km) |
| Delfzijl to Ostroleka | 605.56 mi (974.55 km) |
| Delfzijl to Ostrow Mazowiecka | 622.01 mi (1,001.02 km) |
| Delfzijl to Ostrow Wielkopolski | 472.56 mi (760.51 km) |
| Delfzijl to Ostrowiec Swietokrzyski | 635.00 mi (1,021.93 km) |
| Delfzijl to Ostrzeszow | 482.63 mi (776.72 km) |
| Delfzijl to Oswiecim | 573.20 mi (922.47 km) |
| Delfzijl to Otwock | 605.29 mi (974.11 km) |
| Delfzijl to Ozarow Mazowiecki | 584.45 mi (940.58 km) |
| Delfzijl to Ozimek | 513.76 mi (826.81 km) |
| Delfzijl to Ozorkow | 526.21 mi (846.85 km) |
| Delfzijl to Pabianice | 536.45 mi (863.34 km) |
| Delfzijl to Parczew | 679.84 mi (1,094.10 km) |
