Timberlake topped Homedale 44-34 and Filer rolled past Priest River 44-32 in Friday's semifinals to set up a championship meeting at 3:50 p.m. Saturday at the Ford Idaho Center.
Allison Kirby had 14 points for Timberlake in its win, and Katie Hughes scored 16 points for Filer.
Both teams are seeking their first state title.
Ririe and Firth won by a combined 40 points Friday to advance to the championship game.
Ririe, which beat Cole Valley 48-30 in the semifinals, got 15 points from Sicilee Williams. Firth, winners by a 57-35 margin over Melba, got 19 points and six rebounds from Kayla Jensen.
The Bulldogs and Cougars face off at 1:40 p.m. Saturday at the Ford Idaho Center.
1A DIVISION I
Lapwai will play for its seventh state title after routing Genesee 52-31 on Friday. The Wildcats will face Prairie at 11:30 a.m. Saturday in the Ford Idaho Center.
The Wildcats have won their two state tournament games by a combined 49 points. Marquel Shawl had 17 points.
Prairie topped Grace 49-43 behind 17 points from Kayla Schumacher and 12 points and 14 rebounds from Kyndahl Ulmer.
1A DIVISION II
The Dietrich Blue Devils will go for their fourth straight state title Saturday after pulling out a 35-34 semifinal win over Rockland.
Dietrich will face Mackay, 43-36 winners over Lighthouse Christian, at 9:30 a.m. Saturday at the Ford Idaho Center. Jacey Shaw and Nicki Larson had 14 and 12 points, respectively, for Dietrich.
Mackay got 15 points from sophomore Katrina Spaulding in the win over Lighthouse Christian.