| Gornji Milanovac to Orbetello | 477.71 mi (768.81 km) |
| Gornji Milanovac to Oria | 282.84 mi (455.19 km) |
| Gornji Milanovac to Oristano | 671.75 mi (1,081.08 km) |
| Gornji Milanovac to Orta Nova | 304.28 mi (489.70 km) |
| Gornji Milanovac to Orte | 420.06 mi (676.02 km) |
| Gornji Milanovac to Ortona | 326.11 mi (524.83 km) |
| Gornji Milanovac to Orvieto | 428.53 mi (689.65 km) |
| Gornji Milanovac to Orzinuovi | 525.00 mi (844.90 km) |
| Gornji Milanovac to Osimo | 349.87 mi (563.06 km) |
| Gornji Milanovac to Ospitaletto | 519.65 mi (836.30 km) |
| Gornji Milanovac to Ostuni | 270.34 mi (435.07 km) |
| Gornji Milanovac to Ottaviano | 375.27 mi (603.94 km) |
| Gornji Milanovac to Ovada | 584.72 mi (941.02 km) |
| Gornji Milanovac to Ozieri | 630.88 mi (1,015.30 km) |
| Gornji Milanovac to Paceco | 585.97 mi (943.02 km) |
