| Rockville to La Crescenta-Montrose (California) | 2,281.96 mi (3,672.46 km) |
| Rockville to La Crosse (Wisconsin) | 797.55 mi (1,283.54 km) |
| Rockville to La Grande (Oregon) | 2,115.10 mi (3,403.93 km) |
| Rockville to La Grange (Illinois) | 593.71 mi (955.49 km) |
| Rockville to La Grange Park (Illinois) | 594.05 mi (956.03 km) |
| Rockville to La Habra (California) | 2,274.25 mi (3,660.05 km) |
| Rockville to La Homa (Texas) | 1,511.17 mi (2,431.99 km) |
| Rockville to La Marque (Texas) | 1,216.76 mi (1,958.19 km) |
| Rockville to La Mesa (California) | 2,254.14 mi (3,627.68 km) |
| Rockville to La Mirada (California) | 2,277.98 mi (3,666.06 km) |
| Rockville to La Palma (California) | 2,280.96 mi (3,670.85 km) |
| Rockville to La Porte (Indiana) | 532.36 mi (856.75 km) |
| Rockville to La Porte (Texas) | 1,206.62 mi (1,941.86 km) |
| Rockville to La Presa (California) | 2,254.77 mi (3,628.70 km) |
| Rockville to La Puente (California) | 2,271.77 mi (3,656.07 km) |
