| Llantwit Major to Irun | 562.99 mi (906.04 km) |
| Llantwit Major to Isla-Cristina | 999.50 mi (1,608.54 km) |
| Llantwit Major to Jaca | 627.11 mi (1,009.24 km) |
| Llantwit Major to Jaen | 942.51 mi (1,516.82 km) |
| Llantwit Major to Jerez de la Frontera | 1,025.74 mi (1,650.77 km) |
| Llantwit Major to Jerez de los Caballeros | 918.20 mi (1,477.70 km) |
| Llantwit Major to Jodar | 937.82 mi (1,509.27 km) |
| Llantwit Major to Jumilla | 899.23 mi (1,447.17 km) |
| Llantwit Major to La Algaba | 972.14 mi (1,564.51 km) |
| Llantwit Major to La Baneza | 639.61 mi (1,029.36 km) |
| Llantwit Major to La Carlota | 951.97 mi (1,532.05 km) |
| Llantwit Major to La Carolina | 907.88 mi (1,461.09 km) |
| Llantwit Major to La Corredoria | 564.87 mi (909.07 km) |
| Llantwit Major to La Eliana | 830.25 mi (1,336.16 km) |
| Llantwit Major to La Escala | 713.53 mi (1,148.31 km) |
