| New Port Richey to Oerlinghausen | 4,761.93 mi (7,663.59 km) |
| New Port Richey to Oestrich-Winkel | 4,779.76 mi (7,692.28 km) |
| New Port Richey to Offenburg | 4,812.80 mi (7,745.45 km) |
| New Port Richey to Oftersheim | 4,819.11 mi (7,755.61 km) |
| New Port Richey to Ohrdruf | 4,872.69 mi (7,841.84 km) |
| New Port Richey to Ohringen | 4,861.88 mi (7,824.44 km) |
| New Port Richey to Olbernhau | 4,982.24 mi (8,018.13 km) |
| New Port Richey to Olching | 4,964.34 mi (7,989.33 km) |
| New Port Richey to Oldenburg | 4,717.57 mi (7,592.19 km) |
| New Port Richey to Oldenburg in Holstein | 4,794.17 mi (7,715.48 km) |
| New Port Richey to Olfen | 4,715.69 mi (7,589.16 km) |
| New Port Richey to Olpe | 4,749.63 mi (7,643.79 km) |
| New Port Richey to Olsberg | 4,768.63 mi (7,674.36 km) |
| New Port Richey to Oranienburg | 4,922.89 mi (7,922.62 km) |
| New Port Richey to Ortenberg | 4,815.34 mi (7,749.54 km) |
