| Seia to Pemberton | 935.99 mi (1,506.33 km) |
| Seia to Pembroke Dock | 789.75 mi (1,270.99 km) |
| Seia to Pen-y-Bont ar Ogwr | 790.78 mi (1,272.63 km) |
| Seia to Penarth | 790.76 mi (1,272.61 km) |
| Seia to Pencoed | 792.69 mi (1,275.72 km) |
| Seia to Pendlebury | 938.45 mi (1,510.28 km) |
| Seia to Penicuik | 1,083.64 mi (1,743.94 km) |
| Seia to Penistone | 948.67 mi (1,526.73 km) |
| Seia to Penkridge | 889.83 mi (1,432.04 km) |
| Seia to Penrith | 1,010.14 mi (1,625.67 km) |
| Seia to Penwortham | 948.98 mi (1,527.24 km) |
| Seia to Penzance | 678.14 mi (1,091.36 km) |
| Seia to Perivale | 844.88 mi (1,359.71 km) |
| Seia to Perry Barr | 879.85 mi (1,415.98 km) |
| Seia to Perth | 1,120.38 mi (1,803.07 km) |
