Wikipedia
Kolmonen
Finnish Football League Structure
Veikkausliiga (Tier 1)
Ykkönen (Tier 2)
Kakkonen (Tier 3)
Kolmonen (Tier 4)
Nelonen (Tier 5)
Vitonen (Tier 6)
Kutonen (Tier 7)
Seiska (Tier 8)
Kolmonen or III divisioona is the fourth level in the league system of Finnish football and comprises 104 Finnish football teams. The III divisioona was introduced in 1973 and in the mid-1990s became known as the Kolmonen (Number Three in English and Trean in Swedish).