| Princeton to Oerlinghausen | 4,808.49 mi (7,738.52 km) |
| Princeton to Oestrich-Winkel | 4,817.68 mi (7,753.30 km) |
| Princeton to Offenburg | 4,844.34 mi (7,796.21 km) |
| Princeton to Oftersheim | 4,854.95 mi (7,813.28 km) |
| Princeton to Ohrdruf | 4,916.37 mi (7,912.13 km) |
| Princeton to Ohringen | 4,897.84 mi (7,882.32 km) |
| Princeton to Olbernhau | 5,027.70 mi (8,091.30 km) |
| Princeton to Olching | 4,998.02 mi (8,043.53 km) |
| Princeton to Oldenburg | 4,768.62 mi (7,674.35 km) |
| Princeton to Oldenburg in Holstein | 4,851.97 mi (7,808.50 km) |
| Princeton to Olfen | 4,760.21 mi (7,660.81 km) |
| Princeton to Olpe | 4,791.60 mi (7,711.34 km) |
| Princeton to Olsberg | 4,812.50 mi (7,744.98 km) |
| Princeton to Oranienburg | 4,976.49 mi (8,008.89 km) |
| Princeton to Ortenberg | 4,855.62 mi (7,814.37 km) |
