| Grossostheim to Oria | 771.23 mi (1,241.18 km) |
| Grossostheim to Oristano | 692.10 mi (1,113.83 km) |
| Grossostheim to Orta Nova | 673.53 mi (1,083.95 km) |
| Grossostheim to Orte | 538.72 mi (866.99 km) |
| Grossostheim to Ortona | 581.13 mi (935.23 km) |
| Grossostheim to Orvieto | 517.80 mi (833.31 km) |
| Grossostheim to Orzinuovi | 314.56 mi (506.24 km) |
| Grossostheim to Osimo | 490.76 mi (789.80 km) |
| Grossostheim to Ospitaletto | 304.83 mi (490.57 km) |
| Grossostheim to Ostuni | 755.95 mi (1,216.58 km) |
| Grossostheim to Ottaviano | 678.49 mi (1,091.93 km) |
| Grossostheim to Ovada | 365.21 mi (587.75 km) |
| Grossostheim to Ozieri | 644.78 mi (1,037.67 km) |
| Grossostheim to Paceco | 842.11 mi (1,355.25 km) |
| Grossostheim to Pachino | 960.08 mi (1,545.10 km) |
