| Security-Widefield to Oerlinghausen | 5,002.59 mi (8,050.90 km) |
| Security-Widefield to Oestrich-Winkel | 5,070.57 mi (8,160.29 km) |
| Security-Widefield to Offenburg | 5,138.50 mi (8,269.62 km) |
| Security-Widefield to Oftersheim | 5,118.99 mi (8,238.21 km) |
| Security-Widefield to Ohrdruf | 5,121.41 mi (8,242.12 km) |
| Security-Widefield to Ohringen | 5,157.48 mi (8,300.15 km) |
| Security-Widefield to Olbernhau | 5,211.18 mi (8,386.59 km) |
| Security-Widefield to Olching | 5,265.16 mi (8,473.46 km) |
| Security-Widefield to Oldenburg | 4,934.85 mi (7,941.88 km) |
| Security-Widefield to Oldenburg in Holstein | 4,963.69 mi (7,988.29 km) |
| Security-Widefield to Olfen | 4,972.52 mi (8,002.50 km) |
| Security-Widefield to Olpe | 5,018.81 mi (8,076.99 km) |
| Security-Widefield to Olsberg | 5,024.83 mi (8,086.69 km) |
| Security-Widefield to Oranienburg | 5,107.25 mi (8,219.33 km) |
| Security-Widefield to Ortenberg | 5,089.13 mi (8,190.16 km) |
