| Prospect Heights to Orthez | 4,199.63 mi (6,758.65 km) |
| Prospect Heights to Orvault | 4,030.48 mi (6,486.43 km) |
| Prospect Heights to Osny | 4,115.54 mi (6,623.32 km) |
| Prospect Heights to Ostwald | 4,351.57 mi (7,003.18 km) |
| Prospect Heights to Ouistreham | 4,017.09 mi (6,464.88 km) |
| Prospect Heights to Oullins | 4,347.24 mi (6,996.21 km) |
| Prospect Heights to Outreau | 4,040.55 mi (6,502.63 km) |
| Prospect Heights to Oyonnax | 4,360.28 mi (7,017.19 km) |
| Prospect Heights to Ozoir-la-Ferriere | 4,149.57 mi (6,678.09 km) |
| Prospect Heights to Pace | 3,994.74 mi (6,428.91 km) |
| Prospect Heights to Palaiseau | 4,134.87 mi (6,654.44 km) |
| Prospect Heights to Pamiers | 4,314.39 mi (6,943.34 km) |
| Prospect Heights to Panazol | 4,200.80 mi (6,760.54 km) |
| Prospect Heights to Pantin | 4,134.50 mi (6,653.84 km) |
| Prospect Heights to Paray-le-Monial | 4,291.71 mi (6,906.85 km) |
