 Amusement attractions are back on the midway this year at the Pennington County Fair, July 17th through the 21st. Get your Advanced Mega Ride Pass for unlimited rides and unlimited fun all five days of the fair and save. Mega Ride Passes are $75. Advanced Day Passes for unlimited rides for one day only are $25. Please note the Advanced Mega Ride Pass and the Advanced Day Passes are available online only.