| Potomac to Paimio | 4,228.38 mi (6,804.92 km) |
| Potomac to Pargas | 4,221.46 mi (6,793.78 km) |
| Potomac to Pedersore | 4,122.97 mi (6,635.29 km) |
| Potomac to Pieksamaki | 4,290.44 mi (6,904.80 km) |
| Potomac to Pirkkala | 4,221.87 mi (6,794.44 km) |
| Potomac to Pori | 4,167.75 mi (6,707.35 km) |
| Potomac to Porvoo | 4,317.64 mi (6,948.57 km) |
| Potomac to Poytya | 4,216.47 mi (6,785.75 km) |
| Potomac to Raahe | 4,136.93 mi (6,657.74 km) |
| Potomac to Raisio | 4,211.36 mi (6,777.53 km) |
| Potomac to Raseborg | 4,266.45 mi (6,866.19 km) |
| Potomac to Rauma | 4,170.29 mi (6,711.43 km) |
| Potomac to Riihimaki | 4,279.47 mi (6,887.14 km) |
| Potomac to Rovaniemi | 4,108.99 mi (6,612.79 km) |
| Potomac to Saaminki | 4,354.12 mi (7,007.28 km) |
