| Citrus to Oerlinghausen | 5,670.50 mi (9,125.79 km) |
| Citrus to Oestrich-Winkel | 5,751.43 mi (9,256.02 km) |
| Citrus to Offenburg | 5,827.56 mi (9,378.55 km) |
| Citrus to Oftersheim | 5,801.19 mi (9,336.11 km) |
| Citrus to Ohrdruf | 5,788.40 mi (9,315.53 km) |
| Citrus to Ohringen | 5,837.43 mi (9,394.43 km) |
| Citrus to Olbernhau | 5,869.51 mi (9,446.07 km) |
| Citrus to Olching | 5,943.83 mi (9,565.66 km) |
| Citrus to Oldenburg | 5,597.61 mi (9,008.49 km) |
| Citrus to Oldenburg in Holstein | 5,610.59 mi (9,029.37 km) |
| Citrus to Olfen | 5,646.10 mi (9,086.52 km) |
| Citrus to Olpe | 5,694.75 mi (9,164.82 km) |
| Citrus to Olsberg | 5,696.77 mi (9,168.07 km) |
| Citrus to Oranienburg | 5,754.50 mi (9,260.97 km) |
| Citrus to Ortenberg | 5,764.51 mi (9,277.09 km) |
