| Mariestad to Octeville | 881.49 mi (1,418.62 km) |
| Mariestad to Oignies | 713.16 mi (1,147.72 km) |
| Mariestad to Oissel | 824.74 mi (1,327.29 km) |
| Mariestad to Olivet | 893.13 mi (1,437.35 km) |
| Mariestad to Ollioules | 1,127.91 mi (1,815.19 km) |
| Mariestad to Olonne-sur-Mer | 1,059.46 mi (1,705.04 km) |
| Mariestad to Oloron-Sainte-Marie | 1,235.85 mi (1,988.91 km) |
| Mariestad to Onet Village | 1,098.24 mi (1,767.45 km) |
| Mariestad to Onnaing | 703.74 mi (1,132.56 km) |
| Mariestad to Orange | 1,076.12 mi (1,731.86 km) |
| Mariestad to Orchies | 706.88 mi (1,137.62 km) |
| Mariestad to Orleans | 890.60 mi (1,433.28 km) |
| Mariestad to Orly | 829.01 mi (1,334.16 km) |
| Mariestad to Ormesson-sur-Marne | 823.22 mi (1,324.84 km) |
| Mariestad to Orsay | 836.41 mi (1,346.07 km) |
