| Grain Valley to Octeville | 4,339.08 mi (6,983.07 km) |
| Grain Valley to Oignies | 4,486.93 mi (7,221.02 km) |
| Grain Valley to Oissel | 4,455.13 mi (7,169.84 km) |
| Grain Valley to Olivet | 4,540.04 mi (7,306.49 km) |
| Grain Valley to Ollioules | 4,880.82 mi (7,854.92 km) |
| Grain Valley to Olonne-sur-Mer | 4,440.23 mi (7,145.86 km) |
| Grain Valley to Oloron-Sainte-Marie | 4,609.46 mi (7,418.21 km) |
| Grain Valley to Onet Village | 4,699.15 mi (7,562.55 km) |
| Grain Valley to Onnaing | 4,512.49 mi (7,262.15 km) |
| Grain Valley to Orange | 4,798.57 mi (7,722.55 km) |
| Grain Valley to Orchies | 4,496.10 mi (7,235.77 km) |
| Grain Valley to Orleans | 4,538.95 mi (7,304.74 km) |
| Grain Valley to Orly | 4,526.97 mi (7,285.46 km) |
| Grain Valley to Ormesson-sur-Marne | 4,531.06 mi (7,292.03 km) |
| Grain Valley to Orsay | 4,520.71 mi (7,275.38 km) |
