| Porthcawl to Lowell (Indiana) | 3,829.89 mi (6,163.61 km) |
| Porthcawl to Lowell (Massachusetts) | 3,124.75 mi (5,028.80 km) |
| Porthcawl to Lower Burrell (Pennsylvania) | 3,554.81 mi (5,720.91 km) |
| Porthcawl to Lowes Island (Virginia) | 3,525.75 mi (5,674.14 km) |
| Porthcawl to Lubbock (Texas) | 4,766.53 mi (7,670.99 km) |
| Porthcawl to Lufkin (Texas) | 4,601.89 mi (7,406.02 km) |
| Porthcawl to Luling (Louisiana) | 4,496.15 mi (7,235.85 km) |
| Porthcawl to Lumberton (North Carolina) | 3,796.07 mi (6,109.19 km) |
| Porthcawl to Lumberton (Texas) | 4,635.12 mi (7,459.50 km) |
| Porthcawl to Lutz (Florida) | 4,254.15 mi (6,846.39 km) |
| Porthcawl to Lynbrook (New York) | 3,303.99 mi (5,317.26 km) |
| Porthcawl to Lynchburg (Virginia) | 3,675.50 mi (5,915.15 km) |
| Porthcawl to Lynden (Washington) | 4,618.54 mi (7,432.83 km) |
| Porthcawl to Lyndhurst (Ohio) | 3,585.47 mi (5,770.25 km) |
| Porthcawl to Lyndon (Kentucky) | 3,896.65 mi (6,271.06 km) |
