| Pleasant Prairie to Orbetello | 4,717.61 mi (7,592.26 km) |
| Pleasant Prairie to Oria | 5,057.72 mi (8,139.61 km) |
| Pleasant Prairie to Oristano | 4,718.77 mi (7,594.13 km) |
| Pleasant Prairie to Orta Nova | 4,944.55 mi (7,957.49 km) |
| Pleasant Prairie to Orte | 4,763.39 mi (7,665.93 km) |
| Pleasant Prairie to Ortona | 4,847.49 mi (7,801.28 km) |
| Pleasant Prairie to Orvieto | 4,741.28 mi (7,630.35 km) |
| Pleasant Prairie to Orzinuovi | 4,542.32 mi (7,310.15 km) |
| Pleasant Prairie to Osimo | 4,761.81 mi (7,663.39 km) |
| Pleasant Prairie to Ospitaletto | 4,541.32 mi (7,308.55 km) |
| Pleasant Prairie to Ostuni | 5,044.97 mi (8,119.10 km) |
| Pleasant Prairie to Ottaviano | 4,917.53 mi (7,914.01 km) |
| Pleasant Prairie to Ovada | 4,523.19 mi (7,279.38 km) |
| Pleasant Prairie to Ozieri | 4,707.01 mi (7,575.20 km) |
| Pleasant Prairie to Paceco | 4,967.55 mi (7,994.50 km) |
