| Dumbarton to Ittiri | 1,215.83 mi (1,956.69 km) |
| Dumbarton to Ivrea | 903.15 mi (1,453.48 km) |
| Dumbarton to L'Aquila | 1,234.35 mi (1,986.49 km) |
| Dumbarton to La Loggia | 927.91 mi (1,493.33 km) |
| Dumbarton to La Maddalena | 1,196.54 mi (1,925.65 km) |
| Dumbarton to La Spezia | 1,033.96 mi (1,664.00 km) |
| Dumbarton to Lacchiarella | 944.99 mi (1,520.82 km) |
| Dumbarton to Ladispoli | 1,220.17 mi (1,963.67 km) |
| Dumbarton to Lainate | 928.28 mi (1,493.93 km) |
| Dumbarton to Laives | 948.44 mi (1,526.36 km) |
| Dumbarton to Lana | 932.42 mi (1,500.59 km) |
| Dumbarton to Lanciano | 1,269.62 mi (2,043.25 km) |
| Dumbarton to Langhirano | 1,016.44 mi (1,635.81 km) |
| Dumbarton to Lanuvio | 1,253.16 mi (2,016.76 km) |
| Dumbarton to Lariano | 1,253.92 mi (2,018.00 km) |
