| Cayey to Oerlinghausen | 4,597.33 mi (7,398.68 km) |
| Cayey to Oestrich-Winkel | 4,568.09 mi (7,351.63 km) |
| Cayey to Offenburg | 4,565.80 mi (7,347.94 km) |
| Cayey to Oftersheim | 4,594.56 mi (7,394.22 km) |
| Cayey to Ohrdruf | 4,687.45 mi (7,543.72 km) |
| Cayey to Ohringen | 4,636.04 mi (7,460.98 km) |
| Cayey to Olbernhau | 4,801.54 mi (7,727.34 km) |
| Cayey to Olching | 4,721.74 mi (7,598.91 km) |
| Cayey to Oldenburg | 4,579.31 mi (7,369.69 km) |
| Cayey to Oldenburg in Holstein | 4,688.88 mi (7,546.02 km) |
| Cayey to Olfen | 4,542.33 mi (7,310.17 km) |
| Cayey to Olpe | 4,561.03 mi (7,340.27 km) |
| Cayey to Olsberg | 4,589.31 mi (7,385.78 km) |
| Cayey to Oranienburg | 4,788.79 mi (7,706.81 km) |
| Cayey to Ortenberg | 4,614.61 mi (7,426.50 km) |
