| Grudziadz to Octeville | 912.31 mi (1,468.23 km) |
| Grudziadz to Oignies | 700.76 mi (1,127.76 km) |
| Grudziadz to Oissel | 810.65 mi (1,304.62 km) |
| Grudziadz to Olivet | 831.16 mi (1,337.63 km) |
| Grudziadz to Ollioules | 926.07 mi (1,490.36 km) |
| Grudziadz to Olonne-sur-Mer | 1,025.12 mi (1,649.76 km) |
| Grudziadz to Oloron-Sainte-Marie | 1,132.30 mi (1,822.25 km) |
| Grudziadz to Onet Village | 963.24 mi (1,550.19 km) |
| Grudziadz to Onnaing | 678.69 mi (1,092.24 km) |
| Grudziadz to Orange | 902.41 mi (1,452.29 km) |
| Grudziadz to Orchies | 690.50 mi (1,111.25 km) |
| Grudziadz to Orleans | 829.35 mi (1,334.70 km) |
| Grudziadz to Orly | 779.35 mi (1,254.24 km) |
| Grudziadz to Ormesson-sur-Marne | 772.18 mi (1,242.70 km) |
| Grudziadz to Orsay | 789.00 mi (1,269.77 km) |
