| Hohr-Grenzhausen to Oria | 837.58 mi (1,347.95 km) |
| Hohr-Grenzhausen to Oristano | 728.86 mi (1,172.99 km) |
| Hohr-Grenzhausen to Orta Nova | 737.42 mi (1,186.77 km) |
| Hohr-Grenzhausen to Orte | 594.66 mi (957.01 km) |
| Hohr-Grenzhausen to Ortona | 643.49 mi (1,035.60 km) |
| Hohr-Grenzhausen to Orvieto | 573.08 mi (922.28 km) |
| Hohr-Grenzhausen to Orzinuovi | 363.27 mi (584.62 km) |
| Hohr-Grenzhausen to Osimo | 552.62 mi (889.35 km) |
| Hohr-Grenzhausen to Ospitaletto | 354.93 mi (571.20 km) |
| Hohr-Grenzhausen to Ostuni | 822.50 mi (1,323.69 km) |
| Hohr-Grenzhausen to Ottaviano | 738.63 mi (1,188.71 km) |
| Hohr-Grenzhausen to Ovada | 403.02 mi (648.59 km) |
| Hohr-Grenzhausen to Ozieri | 683.60 mi (1,100.14 km) |
| Hohr-Grenzhausen to Paceco | 893.11 mi (1,437.33 km) |
| Hohr-Grenzhausen to Pachino | 1,016.92 mi (1,636.58 km) |
