| Caerphilly to Leopoldsburg | 366.87 mi (590.42 km) |
| Caerphilly to Lessines | 311.24 mi (500.89 km) |
| Caerphilly to Leuven | 345.75 mi (556.42 km) |
| Caerphilly to Lichtervelde | 276.82 mi (445.50 km) |
| Caerphilly to Liedekerke | 319.61 mi (514.36 km) |
| Caerphilly to Liege | 386.47 mi (621.97 km) |
| Caerphilly to Lierre | 337.13 mi (542.56 km) |
| Caerphilly to Lille | 347.65 mi (559.50 km) |
| Caerphilly to Lint | 333.72 mi (537.07 km) |
| Caerphilly to Lochristi | 306.02 mi (492.50 km) |
| Caerphilly to Lokeren | 312.45 mi (502.84 km) |
| Caerphilly to Lommel | 368.41 mi (592.90 km) |
| Caerphilly to Londerzeel | 327.15 mi (526.50 km) |
| Caerphilly to Louvain-la-Neuve | 340.41 mi (547.83 km) |
| Caerphilly to Lovendegem | 296.03 mi (476.41 km) |
