| New Port Richey East to Orbetello | 5,114.56 mi (8,231.09 km) |
| New Port Richey East to Oria | 5,471.95 mi (8,806.25 km) |
| New Port Richey East to Oristano | 5,059.41 mi (8,142.33 km) |
| New Port Richey East to Orta Nova | 5,356.44 mi (8,620.36 km) |
| New Port Richey East to Orte | 5,168.51 mi (8,317.92 km) |
| New Port Richey East to Ortona | 5,264.71 mi (8,472.73 km) |
| New Port Richey East to Orvieto | 5,148.35 mi (8,285.47 km) |
| New Port Richey East to Orzinuovi | 4,975.66 mi (8,007.55 km) |
| New Port Richey East to Osimo | 5,189.19 mi (8,351.20 km) |
| New Port Richey East to Ospitaletto | 4,977.85 mi (8,011.08 km) |
| New Port Richey East to Ostuni | 5,462.05 mi (8,790.32 km) |
| New Port Richey East to Ottaviano | 5,313.77 mi (8,551.69 km) |
| New Port Richey East to Ovada | 4,937.12 mi (7,945.52 km) |
| New Port Richey East to Ozieri | 5,060.94 mi (8,144.79 km) |
| New Port Richey East to Paceco | 5,307.98 mi (8,542.36 km) |
