| Port Huron to Orthez | 3,931.38 mi (6,326.94 km) |
| Port Huron to Orvault | 3,768.82 mi (6,065.33 km) |
| Port Huron to Osny | 3,860.90 mi (6,213.51 km) |
| Port Huron to Ostwald | 4,100.97 mi (6,599.88 km) |
| Port Huron to Ouistreham | 3,761.01 mi (6,052.76 km) |
| Port Huron to Oullins | 4,087.78 mi (6,578.64 km) |
| Port Huron to Outreau | 3,789.48 mi (6,098.58 km) |
| Port Huron to Oyonnax | 4,102.69 mi (6,602.65 km) |
| Port Huron to Ozoir-la-Ferriere | 3,894.82 mi (6,268.10 km) |
| Port Huron to Pace | 3,734.86 mi (6,010.67 km) |
| Port Huron to Palaiseau | 3,879.59 mi (6,243.60 km) |
| Port Huron to Pamiers | 4,047.34 mi (6,513.57 km) |
| Port Huron to Panazol | 3,938.56 mi (6,338.51 km) |
| Port Huron to Pantin | 3,879.78 mi (6,243.90 km) |
| Port Huron to Paray-le-Monial | 4,033.14 mi (6,490.71 km) |
