| Wicklow to Oerlinghausen | 621.50 mi (1,000.21 km) |
| Wicklow to Oestrich-Winkel | 636.58 mi (1,024.48 km) |
| Wicklow to Offenburg | 684.25 mi (1,101.19 km) |
| Wicklow to Oftersheim | 678.98 mi (1,092.71 km) |
| Wicklow to Ohrdruf | 728.21 mi (1,171.94 km) |
| Wicklow to Ohringen | 721.07 mi (1,160.46 km) |
| Wicklow to Olbernhau | 839.63 mi (1,351.25 km) |
| Wicklow to Olching | 826.87 mi (1,330.73 km) |
| Wicklow to Oldenburg | 590.70 mi (950.65 km) |
| Wicklow to Oldenburg in Holstein | 697.22 mi (1,122.07 km) |
| Wicklow to Olfen | 572.06 mi (920.64 km) |
| Wicklow to Olpe | 604.21 mi (972.38 km) |
| Wicklow to Olsberg | 624.30 mi (1,004.71 km) |
| Wicklow to Oranienburg | 801.48 mi (1,289.86 km) |
| Wicklow to Ortenberg | 670.07 mi (1,078.37 km) |
