| Castle Rock to Lemay (Missouri) | 784.11 mi (1,261.90 km) |
| Castle Rock to Lemon Grove (California) | 819.57 mi (1,318.97 km) |
| Castle Rock to Lemon Hill (California) | 892.93 mi (1,437.04 km) |
| Castle Rock to Lemont (Illinois) | 898.55 mi (1,446.07 km) |
| Castle Rock to Lemoore (California) | 841.73 mi (1,354.63 km) |
| Castle Rock to Lenexa (Kansas) | 538.93 mi (867.32 km) |
| Castle Rock to Lennox (California) | 836.35 mi (1,345.98 km) |
| Castle Rock to Lenoir (North Carolina) | 1,294.80 mi (2,083.78 km) |
| Castle Rock to Leominster (Massachusetts) | 1,728.92 mi (2,782.43 km) |
| Castle Rock to Leon Valley (Texas) | 769.22 mi (1,237.94 km) |
| Castle Rock to Levelland (Texas) | 423.61 mi (681.74 km) |
| Castle Rock to Levittown (New York) | 1,651.43 mi (2,657.71 km) |
| Castle Rock to Levittown (Pennsylvania) | 1,586.65 mi (2,553.46 km) |
| Castle Rock to Lewisburg (Tennessee) | 1,025.74 mi (1,650.77 km) |
| Castle Rock to Lewiston (Idaho) | 781.31 mi (1,257.39 km) |
