- 5,000 are expected at the Women's Flat Track Derby Association 2013 Division 2 Playoffs Aug. 16-18 at Hy-Vee Hall in Des Moines.
2,000 are expected the GBS Motorsports Heartland Challenge Aug. 15-17 in the Carlisle area.
1,800 are expected at USSSA Baseball - Central Iowa Sports Battle of the Bats NIT Aug. 17-18 at James Cownie Baseball Park in Des Moines.
1,000 are expected at the Amateur Softball Association Men's 14" Slow Pitch Major A & B State Softball Championships Aug. 16-19 at Raccoon River Park in West Des Moines.
Click here for a calendar of more events from the Greater Des Moines Convention and Visitors Bureau.