| Alcora to Oerlinghausen | 924.17 mi (1,487.31 km) |
| Alcora to Oestrich-Winkel | 793.48 mi (1,276.98 km) |
| Alcora to Offenburg | 705.36 mi (1,135.17 km) |
| Alcora to Oftersheim | 772.95 mi (1,243.95 km) |
| Alcora to Ohrdruf | 910.98 mi (1,466.07 km) |
| Alcora to Ohringen | 789.64 mi (1,270.80 km) |
| Alcora to Olbernhau | 980.78 mi (1,578.41 km) |
| Alcora to Olching | 799.58 mi (1,286.80 km) |
| Alcora to Oldenburg | 986.27 mi (1,587.25 km) |
| Alcora to Oldenburg in Holstein | 1,109.63 mi (1,785.77 km) |
| Alcora to Olfen | 882.55 mi (1,420.32 km) |
| Alcora to Olpe | 849.41 mi (1,367.00 km) |
| Alcora to Olsberg | 883.61 mi (1,422.03 km) |
| Alcora to Oranienburg | 1,081.67 mi (1,740.79 km) |
| Alcora to Ortenberg | 840.19 mi (1,352.15 km) |
