| Cities | Distance |
|---|---|
| Gross-Gerau to Oria | 787.29 mi (1,267.02 km) |
| Gross-Gerau to Oristano | 691.88 mi (1,113.47 km) |
| Gross-Gerau to Orta Nova | 687.77 mi (1,106.86 km) |
| Gross-Gerau to Orte | 547.90 mi (881.76 km) |
| Gross-Gerau to Ortona | 594.29 mi (956.42 km) |
| Gross-Gerau to Orvieto | 526.59 mi (847.46 km) |
| Gross-Gerau to Orzinuovi | 319.42 mi (514.06 km) |
| Gross-Gerau to Osimo | 503.54 mi (810.37 km) |
| Gross-Gerau to Ospitaletto | 310.40 mi (499.54 km) |
| Gross-Gerau to Ostuni | 772.17 mi (1,242.69 km) |
| Gross-Gerau to Ottaviano | 690.26 mi (1,110.86 km) |
| Gross-Gerau to Ovada | 364.89 mi (587.24 km) |
| Gross-Gerau to Ozieri | 645.43 mi (1,038.71 km) |
| Gross-Gerau to Paceco | 848.78 mi (1,365.98 km) |
| Gross-Gerau to Pachino | 969.97 mi (1,561.01 km) |