| Potomac to Ondokuzmayis | 5,473.20 mi (8,808.26 km) |
| Potomac to Ordu | 5,565.21 mi (8,956.34 km) |
| Potomac to Ortahisar | 5,562.48 mi (8,951.95 km) |
| Potomac to Ortakent | 5,321.05 mi (8,563.41 km) |
| Potomac to Ortaklar | 5,295.60 mi (8,522.45 km) |
| Potomac to Ortakoy | 5,524.36 mi (8,890.59 km) |
| Potomac to Ortakoy | 5,499.67 mi (8,850.86 km) |
| Potomac to Osmaneli | 5,290.02 mi (8,513.46 km) |
| Potomac to Osmaniye | 5,690.85 mi (9,158.53 km) |
| Potomac to Ozdere | 5,274.06 mi (8,487.78 km) |
| Potomac to Palu | 5,754.23 mi (9,260.54 km) |
| Potomac to Pamukkale | 5,361.82 mi (8,629.02 km) |
| Potomac to Patnos | 5,835.01 mi (9,390.54 km) |
| Potomac to Pazar | 5,540.73 mi (8,916.94 km) |
| Potomac to Pazarcik | 5,712.24 mi (9,192.97 km) |
