There's not much the Tucson Convention Center is good for nowadays. Except, apparently, for holding thousands of tons of dirt.
The USA BMX Southwest Indoor Nationals take over the TCC this Friday through Sunday, converting the Tucson Arena floor into a dirt bike track full of hills, valleys, moguls and, during race time, hundreds of BMX racers of all ages.
The Southwest Indoor Nationals were held in this 'world-class arena (according to the flyer)' last August, as well, drawing about 1,000 riders ranging in age from pre-schoolers to adults, all of whom have an innate ability to navigate a contoured dirt course with speed and agility.
This year's event, which like all such USA BMX races is open to the public for participation (assuming you're a USA BMX member), starts with practice runs at 1:30 p.m. Friday, with a 'pre-race' at 5 p.m. Friday. Saturday racing begins at 11:30 a.m., Sunday at 8 a.m.
Further information about registration, practice, parking and various other things can be found on the USA BMX Web site.