| Williamstown to Piedras Blancas | 3,469.63 mi (5,583.83 km) |
| Williamstown to Piera | 3,886.34 mi (6,254.46 km) |
| Williamstown to Pilar de la Horadada | 3,877.55 mi (6,240.31 km) |
| Williamstown to Pilas | 3,623.43 mi (5,831.35 km) |
| Williamstown to Pinos Puente | 3,751.21 mi (6,036.98 km) |
| Williamstown to Pinto | 3,665.34 mi (5,898.80 km) |
| Williamstown to Pizarra | 3,718.91 mi (5,985.00 km) |
| Williamstown to Plasencia | 3,556.01 mi (5,722.84 km) |
| Williamstown to Pola de Laviana | 3,497.33 mi (5,628.41 km) |
| Williamstown to Pola de Lena | 3,486.45 mi (5,610.90 km) |
| Williamstown to Pola de Siero | 3,489.26 mi (5,615.42 km) |
| Williamstown to Pollensa | 3,996.43 mi (6,431.64 km) |
| Williamstown to Ponferrada | 3,465.81 mi (5,577.68 km) |
| Williamstown to Pontevedra | 3,371.35 mi (5,425.67 km) |
| Williamstown to Portugalete | 3,613.67 mi (5,815.64 km) |
