| Stamboliyski to Oria | 375.30 mi (603.99 km) |
| Stamboliyski to Oristano | 843.86 mi (1,358.06 km) |
| Stamboliyski to Orta Nova | 458.03 mi (737.13 km) |
| Stamboliyski to Orte | 620.68 mi (998.88 km) |
| Stamboliyski to Ortona | 518.24 mi (834.02 km) |
| Stamboliyski to Orvieto | 634.30 mi (1,020.81 km) |
| Stamboliyski to Orzinuovi | 761.40 mi (1,225.35 km) |
| Stamboliyski to Osimo | 567.39 mi (913.12 km) |
| Stamboliyski to Ospitaletto | 757.11 mi (1,218.45 km) |
| Stamboliyski to Ostuni | 372.66 mi (599.74 km) |
| Stamboliyski to Ottaviano | 527.61 mi (849.10 km) |
| Stamboliyski to Ovada | 814.89 mi (1,311.44 km) |
| Stamboliyski to Ozieri | 811.31 mi (1,305.68 km) |
| Stamboliyski to Paceco | 694.74 mi (1,118.07 km) |
| Stamboliyski to Pachino | 626.69 mi (1,008.56 km) |
