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.