| Ostrhauderfehn to Novi di Modena | 587.19 mi (944.99 km) |
| Ostrhauderfehn to Novi Ligure | 579.86 mi (933.19 km) |
| Ostrhauderfehn to Nuoro | 888.06 mi (1,429.19 km) |
| Ostrhauderfehn to Occhiobello | 593.80 mi (955.63 km) |
| Ostrhauderfehn to Oderzo | 551.84 mi (888.11 km) |
| Ostrhauderfehn to Oggiono | 512.59 mi (824.94 km) |
| Ostrhauderfehn to Olbia | 847.52 mi (1,363.94 km) |
| Ostrhauderfehn to Oleggio | 521.35 mi (839.03 km) |
| Ostrhauderfehn to Olgiate Comasco | 510.28 mi (821.22 km) |
| Ostrhauderfehn to Olgiate Olona | 520.16 mi (837.12 km) |
| Ostrhauderfehn to Omegna | 501.39 mi (806.90 km) |
| Ostrhauderfehn to Opera | 539.14 mi (867.66 km) |
| Ostrhauderfehn to Oppeano | 563.38 mi (906.68 km) |
| Ostrhauderfehn to Orbassano | 560.32 mi (901.74 km) |
| Ostrhauderfehn to Orbetello | 756.13 mi (1,216.88 km) |
