Urho Kekkonen NOTES 3 whole terms serving (the 3rd exceptionally 10 years) * resigned during the 4th term due to poor health
Urho Kekkonen RANK_BY_LENGTH_OF_TERM(S) 1
Urho Kekkonen have 1st place in length of president for 3 whole terms serving (the 3rd exceptionally 10 years) * resigned during the 4th term due to poor health.