A weekend of flat-track motorcycle racing will culminate Sunday with the return of the Santa Rosa Mile, the next-to-last stop on the 13-race AMA Flat Track Championship series.

The racing event has returned to the Sonoma County Fairgrounds in Santa Rosa, where its inaugural running a year ago attracted a large crowd of fans who saw Sammy Halbert of Graham, Wash., win the main event.

Five riders have a chance to win the AMA Grand National No. 1 plate. Leading the chase is Brad Baker, who has ridden his Harley-Davidson to one win and five podium finishes this season to total 174 points.

Baker is 10 points ahead of Bryan Smith, who finished third at Santa Rosa last year.

Motorcycle racing began Friday night at the Chris Beck Arena at the fairgrounds and will resume today with racing in the AMA support series. It sets the stage for Sunday's two headline attractions compete on the 1-mile main racing oval.

The 12-lap AMA Pro J&P Cycles Pro Singles race is set to begin at 3:30 p.m. followed at 3 p.m. by the 25-lap AMA Pro Grand National Championship Twins.

For ticket information, visit www.santarosamile.com