Officials at Marshalltown Speedway have postponed the 2018 World Nationals until September due to weather.

Originally on the Marshalltown Speedway's 2018 calendar for March 22-24, the $10,000 to win IMCA Modified special will now be contested on September 13-15.

"Conditions have not allowed us to work the track last Thursday," the track's Facebook announced today. "And the forecast for this week/weekend does not look promising in the least."

Running with the IMCA Modifieds will be IMCA Stock Cars, IMCA SportMods, and IMCA Hobby Stocks both nights.

That moves Friday, April 6 up as the first race of the season for the central Iowa speedplant. That night is the third night of the IMCA Frostbuster. Wednesday the week-long series begins at Lee County Speedway. Thursday the tour heads to Benton County Speedway, and the four race stretch wraps at Boone Speedway that Saturday.

Learn more about the event or Marshalltown Speedway at their web site, MarshalltownSpeedway.com