| Castleton to Lapua | 1,109.32 mi (1,785.27 km) |
| Castleton to Laukaa | 1,182.62 mi (1,903.24 km) |
| Castleton to Lauritsala | 1,232.43 mi (1,983.41 km) |
| Castleton to Lempaala | 1,091.12 mi (1,755.98 km) |
| Castleton to Leppavirta | 1,240.28 mi (1,996.04 km) |
| Castleton to Lieksa | 1,323.23 mi (2,129.53 km) |
| Castleton to Lieto | 1,032.81 mi (1,662.15 km) |
| Castleton to Liminka | 1,229.40 mi (1,978.52 km) |
| Castleton to Liperi | 1,290.19 mi (2,076.36 km) |
| Castleton to Lohja | 1,081.70 mi (1,740.82 km) |
| Castleton to Loimaa | 1,059.49 mi (1,705.09 km) |
| Castleton to Loviisa | 1,157.10 mi (1,862.17 km) |
| Castleton to Mantsala | 1,129.26 mi (1,817.37 km) |
| Castleton to Mariehamn | 942.35 mi (1,516.57 km) |
| Castleton to Masku | 1,022.86 mi (1,646.14 km) |
