| Weslaco to Octeville | 5,129.40 mi (8,254.98 km) |
| Weslaco to Oignies | 5,294.71 mi (8,521.01 km) |
| Weslaco to Oissel | 5,250.06 mi (8,449.16 km) |
| Weslaco to Olivet | 5,325.98 mi (8,571.34 km) |
| Weslaco to Ollioules | 5,642.95 mi (9,081.44 km) |
| Weslaco to Olonne-sur-Mer | 5,205.21 mi (8,376.98 km) |
| Weslaco to Oloron-Sainte-Marie | 5,349.60 mi (8,609.34 km) |
| Weslaco to Onet Village | 5,459.83 mi (8,786.74 km) |
| Weslaco to Onnaing | 5,321.17 mi (8,563.59 km) |
| Weslaco to Orange | 5,564.84 mi (8,955.75 km) |
| Weslaco to Orchies | 5,304.52 mi (8,536.80 km) |
| Weslaco to Orleans | 5,325.21 mi (8,570.10 km) |
| Weslaco to Orly | 5,320.83 mi (8,563.05 km) |
| Weslaco to Ormesson-sur-Marne | 5,325.61 mi (8,570.74 km) |
| Weslaco to Orsay | 5,313.69 mi (8,551.55 km) |
