| Lansdale to Oerlinghausen | 3,872.92 mi (6,232.86 km) |
| Lansdale to Oestrich-Winkel | 3,902.14 mi (6,279.89 km) |
| Lansdale to Offenburg | 3,944.23 mi (6,347.62 km) |
| Lansdale to Oftersheim | 3,944.18 mi (6,347.55 km) |
| Lansdale to Ohrdruf | 3,986.74 mi (6,416.04 km) |
| Lansdale to Ohringen | 3,986.47 mi (6,415.61 km) |
| Lansdale to Olbernhau | 4,093.42 mi (6,587.72 km) |
| Lansdale to Olching | 4,091.53 mi (6,584.69 km) |
| Lansdale to Oldenburg | 3,823.30 mi (6,153.00 km) |
| Lansdale to Oldenburg in Holstein | 3,892.01 mi (6,263.58 km) |
| Lansdale to Olfen | 3,829.54 mi (6,163.06 km) |
| Lansdale to Olpe | 3,866.64 mi (6,222.75 km) |
| Lansdale to Olsberg | 3,883.01 mi (6,249.10 km) |
| Lansdale to Oranienburg | 4,024.72 mi (6,477.17 km) |
| Lansdale to Ortenberg | 3,934.23 mi (6,331.53 km) |
