| Pharr to Oerlinghausen | 5,473.68 mi (8,809.03 km) |
| Pharr to Oestrich-Winkel | 5,514.08 mi (8,874.05 km) |
| Pharr to Offenburg | 5,562.75 mi (8,952.37 km) |
| Pharr to Oftersheim | 5,558.08 mi (8,944.86 km) |
| Pharr to Ohrdruf | 5,590.09 mi (8,996.37 km) |
| Pharr to Ohringen | 5,599.75 mi (9,011.92 km) |
| Pharr to Olbernhau | 5,692.70 mi (9,161.52 km) |
| Pharr to Olching | 5,706.26 mi (9,183.35 km) |
| Pharr to Oldenburg | 5,417.87 mi (8,719.21 km) |
| Pharr to Oldenburg in Holstein | 5,473.76 mi (8,809.16 km) |
| Pharr to Olfen | 5,433.83 mi (8,744.91 km) |
| Pharr to Olpe | 5,473.89 mi (8,809.38 km) |
| Pharr to Olsberg | 5,487.47 mi (8,831.23 km) |
| Pharr to Oranienburg | 5,611.82 mi (9,031.35 km) |
| Pharr to Ortenberg | 5,542.83 mi (8,920.33 km) |
