| Huercal-Overa to Oberriet | 901.27 mi (1,450.46 km) |
| Huercal-Overa to Obersiggenthal | 869.72 mi (1,399.68 km) |
| Huercal-Overa to Oberwil | 849.41 mi (1,367.00 km) |
| Huercal-Overa to Oberwingert | 885.90 mi (1,425.72 km) |
| Huercal-Overa to Oftringen | 849.43 mi (1,367.02 km) |
| Huercal-Overa to Olten | 850.70 mi (1,369.07 km) |
| Huercal-Overa to Onex | 734.66 mi (1,182.31 km) |
| Huercal-Overa to Opfikon | 875.31 mi (1,408.67 km) |
| Huercal-Overa to Ostermundigen | 817.37 mi (1,315.43 km) |
| Huercal-Overa to Payerne | 793.50 mi (1,277.01 km) |
| Huercal-Overa to Pfaffikon | 878.62 mi (1,414.00 km) |
| Huercal-Overa to Plan-les-Ouates | 734.22 mi (1,181.62 km) |
| Huercal-Overa to Pratteln | 853.78 mi (1,374.03 km) |
| Huercal-Overa to Prilly | 768.34 mi (1,236.53 km) |
| Huercal-Overa to Pully | 769.38 mi (1,238.20 km) |
