Portugal: total: 1,214 km
border countries: Spain 1,214 km
Puerto Rico:
0 km
Qatar:
total: 60 km
border countries: Saudi Arabia 60 km
Reunion:
0 km
Romania:
total: 2,508 km
border countries: Bulgaria 608 km, Hungary 443 km, Moldova 450 km,
Yugoslavia 476 km, Ukraine (north) 362 km, Ukraine (east) 169 km
Russia:
total: 19,961 km
border countries: Azerbaijan 284 km, Belarus 959 km, China (southeast) 3,605 km, China (south) 40 km, Estonia 294 km, Finland 1,313 km, Georgia 723 km, Kazakhstan 6,846 km, North Korea 19 km, Latvia 217 km, Lithuania (Kaliningrad Oblast) 227 km, Mongolia 3,485 km, Norway 167 km, Poland (Kaliningrad Oblast) 206 km, Ukraine 1,576 km