| Friendswood to Oerlinghausen | 5,179.19 mi (8,335.10 km) |
| Friendswood to Oestrich-Winkel | 5,219.63 mi (8,400.18 km) |
| Friendswood to Offenburg | 5,268.53 mi (8,478.88 km) |
| Friendswood to Oftersheim | 5,263.67 mi (8,471.06 km) |
| Friendswood to Ohrdruf | 5,295.58 mi (8,522.41 km) |
| Friendswood to Ohringen | 5,305.32 mi (8,538.09 km) |
| Friendswood to Olbernhau | 5,398.25 mi (8,687.65 km) |
| Friendswood to Olching | 5,411.87 mi (8,709.57 km) |
| Friendswood to Oldenburg | 5,123.48 mi (8,245.45 km) |
| Friendswood to Oldenburg in Holstein | 5,179.81 mi (8,336.09 km) |
| Friendswood to Olfen | 5,139.32 mi (8,270.94 km) |
| Friendswood to Olpe | 5,179.38 mi (8,335.41 km) |
| Friendswood to Olsberg | 5,192.96 mi (8,357.26 km) |
| Friendswood to Oranienburg | 5,317.69 mi (8,557.99 km) |
| Friendswood to Ortenberg | 5,248.33 mi (8,446.37 km) |
