| Date | IMCA Sport Compacts | Cruisers | IMCA Hobby Stocks | ||
| 4/30/2015 | Nate Coopman | Weishaar/Weishaar | Brandon Nielsen | ||
| 5/21/2015 | Nate Coopman | Weishaar/Weishaar | Brandon Nielsen | ||
| 5/28/2015 | Nate Coopman | Vader/Vader | Shannon Anderson | ||
| 6/4/2015 | Nate Coopman | Weishaar/Weishaar | Brandon Nielsen | ||
| 6/18/2015 | Nate Coopman | R. Hudson/S. Hudson | Shannon Anderson | ||
| 6/25/2015 | Nate Coopman | R. Hudson/S. Hudson | Jeremy Wegner | ||
| 7/2/2015 | Terry Blowers | R. Hudson/S. Hudson | Chanse Hollatz | ||
| 7/9/2015 | Nate Coopman | Weishaar/Weishaar | Austin Hauswirth | ||
| 7/23/2015 | Nate Coopman | R. Hudson/S. Hudson | Kyle Ricke | ||
| 7/25/2015 | Lucas Parsons | Weishaar/Weishaar | Cody Nielsen | ||
| 7/30/2015 | Nate Coopman | R. Hudson/S. Hudson | Shannon Anderson | ||
| 8/6/2015* | Nate Coopman | I. Harmon/E. Essary | Daniel Smith | Fair Race | |
| 8/13/2015 | Jay Devries | Weishaar/Weishaar | Brandon Nielsen | ||
| *Fair Race Winners | |||||
| Track Champion | Jay Devries | Weishaar/Weishaar | Shannon Anderson | ||
| Track Promoter | Kossuth County Fairboard / Al Thoreson – Track Manager | ||||
| Date | IMCA SportMods | IMCA Stock Cars | IMCA Modifieds | IMCA Late Models | Notes |
| 4/30/2015 | Colby Fett | David Wickman | Austin Wolf | ||
| 5/21/2015 | Nick Meyer | Craig Berhow | Rob Hughes | ||
| 5/28/2015 | Nick Meyer | Elijah Zevenbergen | Mike Jergens | ||
| 6/4/2015 | Jared Bounmeester | Derek Green | Austin Wolf | Charlie McKenna | |
| 6/18/2015 | Ben Shultze | Jake Masters | Tim Ward | ||
| 6/25/2015 | George Nordman | Kevin Opheim | Tim Ward | ||
| 7/2/2015 | Ryan Hiscocks | Derek Green | Clayton Christensen | Andy Nezworski | IMCA Deery Series Late Models |
| 7/9/2015 | Nick Meyer | Randy Brands | Jesse Hoeft | ||
| 7/23/2015 | Doug Cook | Kevin Opheim | Brandon Beckendorf | Altenburg Const. $2K stock cars | |
| 7/25/2015 | Nick Meyer | Kevin Opheim | Tim Ward | ||
| 7/30/2015 | Doug Cook | Heath Tulp | Rob Hughes | ||
| 8/6/2015* | Jared Bounmeester | Luke Sathoff | Dustin Smith | Fair Race | |
| 8/13/2015 | Colby Fett | Kevin Opheim | Austin Wolf | ||
| *Fair Race Winners | |||||
| Track Champion | Nick Meyer | Kevin Opheim | Tad Reutzel |
