Dragons' boys and girls teams repeat 2011 feat.
Southlake Carroll sweeps regionals, and the Boswell girls are headed to the state meet.
Fort Worth Boswell and Southlake Carroll also sweep their district meets.
District meets will decide the regional participants.
The district features the nationally ranked Southlake Carroll teams.
Roundup: Keller Central, Mansfield girls teams win home meet.
Arlington Martin boys win and Keller Timber Creek sweeps.
Mansfield teams win Patriot Stampede while 4-5A rules Metroplex Challenge 5A race.
Roundup: Colleyville Heritage boys win MacArthur Invitational and Southlake Carroll teams are No. 1 in Texas.
Kellee McCann and Katherine Chavez are among the area's top runners.