| New Port Richey to Oberkirch | 4,817.67 mi (7,753.29 km) |
| New Port Richey to Obernburg am Main | 4,831.26 mi (7,775.16 km) |
| New Port Richey to Obernkirchen | 4,773.10 mi (7,681.57 km) |
| New Port Richey to Oberschleissheim | 4,973.66 mi (8,004.33 km) |
| New Port Richey to Oberstdorf | 4,940.33 mi (7,950.70 km) |
| New Port Richey to Obertraubling | 4,979.95 mi (8,014.46 km) |
| New Port Richey to Obertshausen | 4,812.99 mi (7,745.76 km) |
| New Port Richey to Oberursel | 4,799.09 mi (7,723.40 km) |
| New Port Richey to Ochsenfurt | 4,874.54 mi (7,844.82 km) |
| New Port Richey to Ochsenhausen | 4,909.10 mi (7,900.44 km) |
| New Port Richey to Ochtrup | 4,697.27 mi (7,559.52 km) |
| New Port Richey to Odenthal | 4,719.78 mi (7,595.75 km) |
| New Port Richey to Oelde | 4,744.14 mi (7,634.96 km) |
| New Port Richey to Oelsnitz | 4,941.60 mi (7,952.74 km) |
| New Port Richey to Oer-Erkenschwick | 4,711.93 mi (7,583.12 km) |
