| Castalla to Oswestry | 992.02 mi (1,596.50 km) |
| Castalla to Otley | 1,058.79 mi (1,703.95 km) |
| Castalla to Ovenden | 1,048.07 mi (1,686.71 km) |
| Castalla to Oxford | 909.38 mi (1,463.50 km) |
| Castalla to Oxted | 875.34 mi (1,408.72 km) |
| Castalla to Padbury | 924.17 mi (1,487.31 km) |
| Castalla to Padiham | 1,053.09 mi (1,694.79 km) |
| Castalla to Paignton | 830.11 mi (1,335.93 km) |
| Castalla to Paisley | 1,204.28 mi (1,938.11 km) |
| Castalla to Palmers Green | 900.08 mi (1,448.54 km) |
| Castalla to Parkstone | 839.27 mi (1,350.68 km) |
| Castalla to Partick | 1,205.21 mi (1,939.60 km) |
| Castalla to Patcham | 847.97 mi (1,364.67 km) |
| Castalla to Peebles | 1,184.13 mi (1,905.68 km) |
| Castalla to Pelsall | 971.67 mi (1,563.75 km) |
