| Tampa to Orbetello | 5,114.78 mi (8,231.45 km) |
| Tampa to Oria | 5,472.32 mi (8,806.85 km) |
| Tampa to Oristano | 5,058.28 mi (8,140.52 km) |
| Tampa to Orta Nova | 5,356.84 mi (8,621.01 km) |
| Tampa to Orte | 5,168.90 mi (8,318.53 km) |
| Tampa to Ortona | 5,265.32 mi (8,473.71 km) |
| Tampa to Orvieto | 5,148.80 mi (8,286.20 km) |
| Tampa to Orzinuovi | 4,976.91 mi (8,009.56 km) |
| Tampa to Osimo | 5,190.12 mi (8,352.69 km) |
| Tampa to Ospitaletto | 4,979.18 mi (8,013.22 km) |
| Tampa to Ostuni | 5,462.50 mi (8,791.05 km) |
| Tampa to Ottaviano | 5,313.81 mi (8,551.76 km) |
| Tampa to Ovada | 4,937.91 mi (7,946.80 km) |
| Tampa to Ozieri | 5,060.14 mi (8,143.50 km) |
| Tampa to Paceco | 5,306.64 mi (8,540.22 km) |
