Due to excessive rainfall and more expected thorughout the day and night, track and series officials have reluctantly canceled Saturday's event at the Mississippi Thunder Speedway.

The Summit USMTS National Championship fueled by Casey’s returns to the Park Jefferson Speedway near Jefferson, S.D., on Monday, May 25, Day for a $2,500-to-win Memorial Day main event at the 9th Annual USMTS River City Rumble.

No driver has won two USMTS events here. The series debut 15 years ago was a barn-burner with local favorite Jay Noteboom besting the USMTS invaders. Other past winners include Kelly Shryock, Jason Krohn, Jason Hughes, Jon Tesch, Ryan Gustin, Rodney Sanders and Lucas Schott, who was the last USMTS winner here in 2018. The event was rained out in 2017 and 2019.

Joining the USMTS will be the make-up of the Pepsi South Dakota Sprint Car Nationals featuring MSTS 360 Sprint Cars, RACEsaver Sprint Cars and Sport Modifieds.

The pit gate will open at 2 p.m. with the spectator entrance opening at 3 p.m. Hot laps are at 4:15 with racing slated to follow around 5 p.m. Tickets can be purchased online at usmts.com/pjtix. Remaining tickets will be sold at the door.

Social distancing guidelines will be in effect and fans are asked to observe best practices. Track officials request that fans and teams bring some type of face covering to help the continuing support from South Dakota government agencies.

The Hampton Inn in North Sioux City has a special Park Jefferson Speedway rate of $89 and can be booked by calling (605) 232-9739. Camping can be found at the KOA of North Sioux City located 1 mile south of the track and reservations can be made at (605) 232-4519. Tell them Park Jefferson sent you.

The Park Jefferson Speedway is a semi-banked 4/10-mile dirt oval located off I-29 at exit 4, then 0.2 mile east to SR 105, then 1.8 miles north (48426 332nd St., Jefferson, SD 57049). For more information call (712) 202-5540, email adam@parkjeff.com or visit parkjeff.com.

Currently, the 2020 schedule for the Summit USMTS National Championship fueled by Casey’s is highlighted by 41 nights of racing at 27 unique dirt ovals for the 22nd season of competition for the world’s Best of the Best in dirt modified racing.

To connect with the USMTS check out USMTS.com, like us on Facebook, follow on Twitter, check us out on Instagram and subscribe to our YouTube channel. Keep up to speed by joining our email list

To learn more about the United States Racing Association, visit USRAracing.com. You can also like us on Facebook, visit us on Instagram, follow us on Twitter and watch us on YouTube. Keep up to speed with everything USRA and subscribe to the USRA e-Newsletter at USRAracing.com/subscribe.

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USMTS OFFICIAL SPONSORS: American Racer Racing Tires, Casey’s, Chevrolet Performance, Compstar Performance Engine Components by Callies, CP-Carrillo, Eibach, Fast Shafts, FK Rod Ends, Intercomp, Jerovetz Motorsports Racing Parts, K1 RaceGear by Ryan Bowers Motorsports, KS Engineering, KSE Racing Products, Malvern Bank, Mesilla Valley Transportation, MSD Performance, MTN DEW Zero Sugar, MyRacePass, Nitroquest Media, PEM Racing Gears & Drivetrain, RacinDirt.com, Snickers, Summit Racing Equipment, Super Clean, VP Racing Fuels, Wrisco Industries.

USMTS PARTICIPATING SPONSORS: Boubin Tire & Automotive, Brodix Cylinder Heads, Duvall Electric, Eagle Moon Farm, JE Pistons, Miller Welders, PBM Performance Products, Rancho Milagro Racing, Rivers Edge Scrap Management, Tony Moro Powder Coat, Top of the World Ranch, YouDirt.com.

USMTS CONTINGENCY SPONSORS: AFCO Racing Products, Allstar Performance, Beyea Headers, BigDeal Car Care, Brown & Miller Racing Solutions, Bryke Racing, BSB Manufacturing, Champ Pans, Deatherage Opticians, Edelbrock, Forty9 Designs, Genesis Racing Shocks, Hooker Harness, Integra Racing Shocks and Springs, Keyser Manufacturing, Maxima Racing Oils, Penske Racing Shocks, QA1, RacerWebsite.com, Real Racing Wheels, Simpson Performance Products, Swift Springs, Sybesma Graphics, Tire Demon, Wehrs Machine & Race Products, Wilwood Racing.