| Waukesha to Orbetello | 4,711.14 mi (7,581.85 km) |
| Waukesha to Oria | 5,050.11 mi (8,127.37 km) |
| Waukesha to Oristano | 4,714.56 mi (7,587.36 km) |
| Waukesha to Orta Nova | 4,937.18 mi (7,945.62 km) |
| Waukesha to Orte | 4,756.53 mi (7,654.89 km) |
| Waukesha to Ortona | 4,840.02 mi (7,789.27 km) |
| Waukesha to Orvieto | 4,734.36 mi (7,619.22 km) |
| Waukesha to Orzinuovi | 4,534.60 mi (7,297.73 km) |
| Waukesha to Osimo | 4,754.04 mi (7,650.89 km) |
| Waukesha to Ospitaletto | 4,533.47 mi (7,295.91 km) |
| Waukesha to Ostuni | 5,037.26 mi (8,106.69 km) |
| Waukesha to Ottaviano | 4,910.83 mi (7,903.21 km) |
| Waukesha to Ovada | 4,516.30 mi (7,268.28 km) |
| Waukesha to Ozieri | 4,702.29 mi (7,567.61 km) |
| Waukesha to Paceco | 4,963.01 mi (7,987.20 km) |
