| Caerphilly to Imatra | 1,372.41 mi (2,208.68 km) |
| Caerphilly to Jakobstad | 1,255.90 mi (2,021.18 km) |
| Caerphilly to Jamsa | 1,274.14 mi (2,050.53 km) |
| Caerphilly to Janakkala | 1,235.23 mi (1,987.91 km) |
| Caerphilly to Jarvenpaa | 1,240.05 mi (1,995.67 km) |
| Caerphilly to Joensuu | 1,429.58 mi (2,300.69 km) |
| Caerphilly to Joutseno | 1,362.81 mi (2,193.23 km) |
| Caerphilly to Jyvaskyla | 1,300.30 mi (2,092.64 km) |
| Caerphilly to Jyvaskylan Maalaiskunta | 1,301.48 mi (2,094.53 km) |
| Caerphilly to Kaarina | 1,150.42 mi (1,851.43 km) |
| Caerphilly to Kajaani | 1,409.56 mi (2,268.47 km) |
| Caerphilly to Kalajoki | 1,309.24 mi (2,107.02 km) |
| Caerphilly to Kangasala | 1,229.91 mi (1,979.35 km) |
| Caerphilly to Kankaanpaa | 1,188.66 mi (1,912.97 km) |
| Caerphilly to Karhula | 1,301.16 mi (2,094.02 km) |
