| Castricum to Hameenkyro | 930.94 mi (1,498.20 km) |
| Castricum to Hameenlinna | 943.59 mi (1,518.56 km) |
| Castricum to Hamina | 1,013.37 mi (1,630.86 km) |
| Castricum to Hanko | 860.34 mi (1,384.58 km) |
| Castricum to Hattula | 942.88 mi (1,517.41 km) |
| Castricum to Haukipudas | 1,132.76 mi (1,823.00 km) |
| Castricum to Hausjarvi | 953.33 mi (1,534.23 km) |
| Castricum to Heinola | 996.40 mi (1,603.56 km) |
| Castricum to Helsinki | 931.66 mi (1,499.37 km) |
| Castricum to Hollola | 974.26 mi (1,567.92 km) |
| Castricum to Huittinen | 899.63 mi (1,447.81 km) |
| Castricum to Hyvinkaa | 943.15 mi (1,517.86 km) |
| Castricum to Ii | 1,139.25 mi (1,833.44 km) |
| Castricum to Iisalmi | 1,110.15 mi (1,786.61 km) |
| Castricum to Ilmajoki | 960.05 mi (1,545.05 km) |
