The Hoker Trucking Super Late Model East Series sdchefuled for Saturday, April 23, at the Karl Chevrolet Hamilton County Speedway in Webster City has been postponed.

Saturday' season opener for the Summit USRA Weekly Racing Series featuring Olsen Family USRA Modifieds, Seneca Foundry USRA Stock Cars, Stein Heating & Cooling USRA B-Mods and Diamond in the Rough USRA Hobby Stocks is also canceled and the season-opening event will now be Saturday, May 7.

The show at the Mason City Motor Speedway Sunday is canceled. Officials will announce a makeup date when one is made official.

HAMILTON COUNTY SPEEDWAY MARKETING PARTNERS: Karl Chevrolet Buick GMC, Kwik Star, American Racer, Arends Ag Service, Availa Bank, Burke Plain Plumbing, CAM Motorsports, Christie Door Company, City of Webster City, CPD Racing Shocks, D & B Agro-Systems, DCD Concrete Coatings, Diamond in the Rough, Farm Credit Services of America, Fertilizer Equipment Specialists, Foster Funeral & Cremation, Gerber Auto Care, Gilbert Jewelers, Good Life RV, Humes Distributing, Hy-Vee, Jerry Goebel State Farm Agent, Jones Rock & Dirt, K.C. Nielsen Ltd., Lampert Lumber, Malvern Bank, McDonald's, Murphy Carpentry, MyRacePass, NAPA Auto Parts, Nitroquest Media, The Olsen Family, P & P Electric, PBM-World-Erson, Peoples Credit Union, Pepsi Beverages, POET Biorefining – Jewell, RacerWebsite.com, RacinDirt, Seneca Foundry, Shawn's Hay Grinding, Stein Heating & Cooling, Summit Racing Equipment, Tex Trail Trailer Parts, Tolle Automotive, The Trashman, Allen Uhrhammer Farms, CF Financial Bank, Webster City Custom Meats, Webster City True Value, Windsor Manor Assisted Living.

= = = = = = = = = = = = = = =

HAMILTON COUNTY SPEEDWAY MARKETING PARTNERS: Karl Chevrolet Buick GMC, Kwik Star, American Racer, Arends Ag Service, Availa Bank, Burke Plain Plumbing, CAM Motorsports, Christie Door Company, City of Webster City, CPD Racing Shocks, D & B Agro-Systems, DCD Concrete Coatings, Diamond in the Rough, Farm Credit Services of America, Fertilizer Equipment Specialists, Foster Funeral & Cremation, Gerber Auto Care, Gilbert Jewelers, Good Life RV, Humes Distributing, Hy-Vee, Jerry Goebel State Farm Agent, Jones Rock & Dirt, K.C. Nielsen Ltd., Lampert Lumber, Malvern Bank, McDonald's, Murphy Carpentry, MyRacePass, NAPA Auto Parts, Nitroquest Media, The Olsen Family, P & P Electric, PBM-World-Erson, Peoples Credit Union, Pepsi Beverages, POET Biorefining – Jewell, RacerWebsite.com, RacinDirt, Seneca Foundry, Shawn's Hay Grinding, Stein Heating & Cooling, Summit Racing Equipment, Tex Trail Trailer Parts, Tolle Automotive, The Trashman, Allen Uhrhammer Farms, CF Financial Bank, Webster City Custom Meats, Webster City True Value, Windsor Manor Assisted Living.

MASON CITY MOTOR SPEEDWAY MARKETING PARTNERS: Andersen’s Market, Bryant Services LLC, Charlie’s Auto Repair, Christie Door Company, Curries ASSA ABLOY, Daley’s Plumbing., Evan’s Pro Detail, Federal Fire Equipment Co., Fertilizer Equipment Specialists, Jones Rock & Dirt, KS Engineering, Kwik Star, MyRacePass, NAPA Auto Parts, Nitroquest Media Group, North Iowa Sand & Gravel, O’Reilly Auto Parts, Pepsi, RacinDirt, Raymond James, Ressler Custom Landscapes, Rookie’s Rockin’ Sports Bar, Router12 Networks, Schaeffer’s Oil, Sevens Restaurant & Steakhouse, Studio 65 Tattoos, Summit Racing Equipment, United Beverage, Window World of Mason City, Wrightz Auction Company.