| Castalla to Rhosllanerchrugog | 1,002.37 mi (1,613.16 km) |
| Castalla to Rhyl | 1,026.05 mi (1,651.27 km) |
| Castalla to Rhymney | 918.13 mi (1,477.58 km) |
| Castalla to Richmond | 888.67 mi (1,430.18 km) |
| Castalla to Rickmansworth | 901.14 mi (1,450.25 km) |
| Castalla to Ripley | 999.24 mi (1,608.12 km) |
| Castalla to Ripon | 1,074.55 mi (1,729.32 km) |
| Castalla to Risca | 906.58 mi (1,458.99 km) |
| Castalla to Rochdale | 1,039.96 mi (1,673.65 km) |
| Castalla to Rochester | 884.72 mi (1,423.81 km) |
| Castalla to Rock Ferry | 1,026.95 mi (1,652.71 km) |
| Castalla to Rogerstone | 905.15 mi (1,456.71 km) |
| Castalla to Romford | 897.78 mi (1,444.84 km) |
| Castalla to Romsey | 857.17 mi (1,379.48 km) |
| Castalla to Ross on Wye | 924.76 mi (1,488.25 km) |
