| Istrana to Lapua | 1,268.59 mi (2,041.60 km) |
| Istrana to Laukaa | 1,279.15 mi (2,058.59 km) |
| Istrana to Lauritsala | 1,246.95 mi (2,006.77 km) |
| Istrana to Lempaala | 1,177.38 mi (1,894.82 km) |
| Istrana to Leppavirta | 1,315.94 mi (2,117.80 km) |
| Istrana to Lieksa | 1,403.61 mi (2,258.89 km) |
| Istrana to Lieto | 1,107.07 mi (1,781.66 km) |
| Istrana to Liminka | 1,414.85 mi (2,276.98 km) |
| Istrana to Liperi | 1,348.79 mi (2,170.67 km) |
| Istrana to Lohja | 1,118.91 mi (1,800.72 km) |
| Istrana to Loimaa | 1,138.03 mi (1,831.49 km) |
| Istrana to Loviisa | 1,171.83 mi (1,885.88 km) |
| Istrana to Mantsala | 1,164.08 mi (1,873.40 km) |
| Istrana to Mariehamn | 1,046.52 mi (1,684.21 km) |
| Istrana to Masku | 1,106.13 mi (1,780.15 km) |
