• Limited Pro Stock Tractors
• Super Modified 2WD Trucks
• Modified 4WD Trucks
• Modifieds Tractors
• Super Farm Tractors
• Light Super Stock Tractors
• Diesel Super Stock Tractors
• Pro Stock Tractors
• Pro 4x4 Pickups
• Unlimited Super Stocks
• Super Stock Semis

New for 2013
• Diesel 4x4 Trucks
• Light Limited Pro Tractors

Rock Valley Tractor Pull, Thunder in the Valley, was voted Pull of the Year 8 years in a row 2005-2012 by the Iowa Tractor Pulling Association and the Outlaw Truck and Tractor Pulling Association.