| Weslaco to Oerlinghausen | 5,466.60 mi (8,797.65 km) |
| Weslaco to Oestrich-Winkel | 5,506.65 mi (8,862.10 km) |
| Weslaco to Offenburg | 5,555.08 mi (8,940.03 km) |
| Weslaco to Oftersheim | 5,550.58 mi (8,932.80 km) |
| Weslaco to Ohrdruf | 5,582.95 mi (8,984.88 km) |
| Weslaco to Ohringen | 5,592.28 mi (8,999.90 km) |
| Weslaco to Olbernhau | 5,685.70 mi (9,150.25 km) |
| Weslaco to Olching | 5,698.75 mi (9,171.26 km) |
| Weslaco to Oldenburg | 5,410.96 mi (8,708.10 km) |
| Weslaco to Oldenburg in Holstein | 5,467.18 mi (8,798.58 km) |
| Weslaco to Olfen | 5,426.65 mi (8,733.35 km) |
| Weslaco to Olpe | 5,466.62 mi (8,797.67 km) |
| Weslaco to Olsberg | 5,480.29 mi (8,819.67 km) |
| Weslaco to Oranienburg | 5,605.13 mi (9,020.59 km) |
| Weslaco to Ortenberg | 5,535.52 mi (8,908.56 km) |
