Saturday: 8 a.m. Dirty Spokes 5K/15K trail runs, 9 a.m.-2 p.m. bike demos, 10 a.m.-2 p.m. Jump Jam on MoFlow/Knuckle Sandwich. Sunday: 8 a.m. Voodoo All-A-Toona 25-mile bike race. Allatoona Creek Trails, 5690 Old Stilesboro Road, Acworth, GA 30101. www.westgeorgiatrailraces.com. www.dirtyspokes.com.