| Castle Rock to Lindsay (California) | 806.54 mi (1,298.00 km) |
| Castle Rock to Linganore (Maryland) | 1,465.36 mi (2,358.27 km) |
| Castle Rock to Lino Lakes (Minnesota) | 721.54 mi (1,161.20 km) |
| Castle Rock to Linthicum (Maryland) | 1,501.31 mi (2,416.13 km) |
| Castle Rock to Linton Hall (Virginia) | 1,458.43 mi (2,347.11 km) |
| Castle Rock to Lisle (Illinois) | 893.87 mi (1,438.55 km) |
| Castle Rock to Lithia Springs (Georgia) | 1,182.76 mi (1,903.46 km) |
| Castle Rock to Little Canada (Minnesota) | 716.56 mi (1,153.19 km) |
| Castle Rock to Little Chute (Wisconsin) | 914.29 mi (1,471.41 km) |
| Castle Rock to Little Elm (Texas) | 614.11 mi (988.31 km) |
| Castle Rock to Little Ferry (New Jersey) | 1,623.08 mi (2,612.10 km) |
| Castle Rock to Little Rock (Arkansas) | 759.39 mi (1,222.11 km) |
| Castle Rock to Littleton (Colorado) | 17.29 mi (27.82 km) |
| Castle Rock to Live Oak (California) | 943.24 mi (1,517.99 km) |
| Castle Rock to Live Oak (Texas) | 772.86 mi (1,243.81 km) |
