Due to the COVID-19 pandemic in Latvia, the inaugural 2020 season did not fully proceed as planned.

The first edition of the Third League, held in accordance with the newly established format, took place in 2021.

There are four regional divisions (West, Center, North, and East) in the Third League, each containing an approximated 10 teams (though the exact number in each division varies by season), which must play home and away games against their regional opponents.

As this is the lowest level of Latvian football, no relegation takes place within the league.

The promotion round involves additional matches between the top two teams of each regional division, allowing four of the best teams to be promoted to the Second League at the conclusion of the season.