| Potomac to Piedras Blancas | 3,595.74 mi (5,786.79 km) |
| Potomac to Piera | 4,012.31 mi (6,457.18 km) |
| Potomac to Pilar de la Horadada | 4,004.56 mi (6,444.72 km) |
| Potomac to Pilas | 3,750.62 mi (6,036.04 km) |
| Potomac to Pinos Puente | 3,878.37 mi (6,241.64 km) |
| Potomac to Pinto | 3,792.15 mi (6,102.87 km) |
| Potomac to Pizarra | 3,846.10 mi (6,189.69 km) |
| Potomac to Plasencia | 3,682.99 mi (5,927.20 km) |
| Potomac to Pola de Laviana | 3,623.51 mi (5,831.48 km) |
| Potomac to Pola de Lena | 3,612.68 mi (5,814.05 km) |
| Potomac to Pola de Siero | 3,615.40 mi (5,818.42 km) |
| Potomac to Pollensa | 4,122.75 mi (6,634.92 km) |
| Potomac to Ponferrada | 3,592.29 mi (5,781.23 km) |
| Potomac to Pontevedra | 3,498.02 mi (5,629.52 km) |
| Potomac to Portugalete | 3,739.56 mi (6,018.24 km) |
