First phase: The thirteen teams that didn't participate in the Copa Sul-Minas were joined by Rio Grande, which had been invited in celebration of its 100th anniversary, and were divided in two groups of seven teams. the teams in each group played against each other in a double round-robin system. After 14 rounds, the two best teams in each group qualified, along with the best non-qualified team, while the team with the fewest points in each group was relegated, to dispute the Second level in the same year. Rio Grande, as a guest, would be relegated after that year regardless of placing.
Second phase: The five remaining teams joined the teams that participated in the Copa Sul-Minas (Internacional, Grêmio and Juventude), and played against each other twice, with the winners of each half qualifying to the Finals. The three best teams qualified to the next year's Copa Sul-Minas.
Finals: The Second phase round winners played in two matches to define the Champions.
Updated to match(es) played on March 26, 2000. Source: RSSSF.com Rules for classification: 1) points; 2) wins; 3) goal difference; 4) number of goals scored. (G) Guests
Updated to match(es) played on March 26, 2000. Source: RSSSF.com Rules for classification: 1) points; 2) wins; 3) goal difference; 4) number of goals scored.
Updated to match(es) played on May 7, 2000. Source: RSSSF.com Rules for classification: 1) points; 2) wins; 3) goal difference; 4) number of goals scored.
Updated to match(es) played on June 11, 2000. Source: RSSSF.com Rules for classification: 1) points; 2) wins; 3) goal difference; 4) number of goals scored.
Updated to match(es) played on June 11, 2000. Source: RSSSF.com Rules for classification: 1) points; 2) wins; 3) goal difference; 4) number of goals scored.