| Llantrisant to Lemay (Missouri) | 4,081.08 mi (6,567.87 km) |
| Llantrisant to Lemon Grove (California) | 5,366.75 mi (8,636.95 km) |
| Llantrisant to Lemon Hill (California) | 5,182.97 mi (8,341.18 km) |
| Llantrisant to Lemont (Illinois) | 3,844.99 mi (6,187.92 km) |
| Llantrisant to Lemoore (California) | 5,257.05 mi (8,460.40 km) |
| Llantrisant to Lenexa (Kansas) | 4,234.89 mi (6,815.39 km) |
| Llantrisant to Lennox (California) | 5,343.34 mi (8,599.27 km) |
| Llantrisant to Lenoir (North Carolina) | 3,852.38 mi (6,199.81 km) |
| Llantrisant to Leominster (Massachusetts) | 3,159.80 mi (5,085.21 km) |
| Llantrisant to Leon Valley (Texas) | 4,861.39 mi (7,823.65 km) |
| Llantrisant to Levelland (Texas) | 4,793.70 mi (7,714.71 km) |
| Llantrisant to Levittown (New York) | 3,306.35 mi (5,321.05 km) |
| Llantrisant to Levittown (Pennsylvania) | 3,386.12 mi (5,449.43 km) |
| Llantrisant to Lewisburg (Tennessee) | 4,089.22 mi (6,580.97 km) |
| Llantrisant to Lewiston (Idaho) | 4,610.21 mi (7,419.42 km) |
