The starting fields are set for Saturday night as the Mason City Motor Speedway hosts the final night of the four-day 25th Anniversary USMTS Silver Jubilee.

Points were accumulated each night Wednesday, Thursday and Friday via time trials, heat races and the feature races.

The top six in points each night locked themselves into the first six spots of the inside, middle and outside tows for Saturday night's 78-lap finale which starts three-wide and pays no less than $25,000 to win and $2,500 just to take the green flag.

STARTING LINEUPS

"A" Main (78 laps):
Row 1 – Dereck Ramirez • Tanner Mullens • Jim Chisholm
Row 2 – Jake Timm • Dallon Murty • Brandon Davis
Row 3 – Dan Ebert • Jake O'Neil • Darron Fuqua
Row 4 – Carlos Ahumada Jr. • Will Krup • Zack VanderBeek
Row 5 – Lance Mari • Dylan Thornton • Kyle Brown
Row 6 – Tyler Wolff • Lucas Schott • Clayton Wagamon
Row 7 – from B-Main • from B-Main • from B-Main
Row 8 – from B-Main • from B-Main • from B-Main
Row 9 – from B-Main • from B-Main • from B-Main
Row 10 – from B-Main • from B-Main • from B-Main
Row 11 – Auction • Auction • Raffle

"B" Main (15 laps, top 12 advance):
Row 1 – Ryan Gustin • Gary Christian
Row 2 – Rodney Sanders • Joe Chisholm
Row 3 – Jeremy Nelson • A.J. Hoff
Row 4 – Cayden Carter • Al Hejna
Row 5 – Austin Siebert • Chad Wheeler
Row 6 – Jason Hughes • Kelly Shryock
Row 7 – from C-Main • from C-Main
Row 8 – from C-Main • from C-Main
Row 9 – from C-Main • from C-Main
Row 10 – from C-Main • from C-Main
Row 11 – from C-Main • from C-Main
Row 12 – from C-Main • from C-Main

"C" Main (15 laps, top 12 advance):
Row 1 – Steve Lavasseur • Ryan Wetzstein
Row 2 – Brandon Givens • Triston Dycus
Row 3 – Tim Ward • Austen Becerra
Row 4 – Terry Phillips • Keith Foss
Row 5 – Alex Williamson • Tyler Davis
Row 6 – Gunner Martin • Taton Hansen
Row 7 – from D-Main • from D-Main
Row 8 – from D-Main • from D-Main
Row 9 – from D-Main • from D-Main
Row 10 – from D-Main • from D-Main
Row 11 – from D-Main • from D-Main
Row 12 – from D-Main • from D-Main

"D" Main (12 laps, top 12 advance):
Row 1 – Chris Dawson • John Doelle
Row 2 – Devon Havlik • Kevin Stoa
Row 3 – Kylie Kath • J.T. Wasmund
Row 4 – Josh Ruby • Darwin Karau
Row 5 – Jayden Larson • Rick Beebe
Row 6 – David Brown • Kelsie Foley
Row 7 – from E-Main • from E-Main
Row 8 – from E-Main • from E-Main
Row 9 – from E-Main • from E-Main
Row 10 – from E-Main • from E-Main
Row 11 – from E-Main • from E-Main
Row 12 – from E-Main • from E-Main

"E" Main (12 laps, top 12 advance):
Row 1 – Cody Simpson • Mitchel Madery
Row 2 – Alan Bohlman • Ron Ver Beek
Row 3 – Daniel Drury •  Duke Erickson
Row 4 – Colton Eck •  Brian Mahlstedt
Row 5 – Jon Plowman • Joe Horgdal
Row 6 – Dustin Brown • Blake Arndt
Row 7 – Gene Nicholas • Bobby Malchus
Row 8 – Adam Bohlman • Lee Beemer
Row 9 – Tyler Wirtjes

With the purchase of their entry fee, each competitor gets one free ticket into the drawing for some incredible prizes that will be given away during the week. If a racer purchases a mulligan, he or she gets another ticket into the same drawing.

Tickets will also be sold for more chances to win great gifts. On the top of that list will be a brand new USMTS 415 spec motor built by Stoen Race Engines valued at $25,000.

Extra tickets for the drawing will be on sale at $20 per ticket or six for $100. Dozens of supporters have stepped up to make this show explode, and many more are expected to jump on board before and during the event.

Officials will also auction off two spots with an opening bid of $2,500 for any person what wishes to get their choice of driver into the finale. Any extra money above $2,500 per driver will be divided equally among drivers finishing third through 33rd.

One final spot will be added by a ticket raffle open to anybody. Tickets will be $10 each, 6 for $50 or 15 for $100. The winner can put in the driver they want into the 33rd starting spot.

Lap sponsorships are $1,000 per lap. From this, more than $40,000 goes to the drivers and $37,500 to sponsors and fans. Fifteen lap sponsors will also be entered for a chance to win up to $25,000.

The feature winners on Wednesday, Thursday and Friday will each draw five (5) random numbers from 1 through 78, and the sponsor(s) of those laps will be in Saturday's drawing (15 lap sponsors total).

For fans, two (2) adults each on Wednesday, Thursday, Friday and Saturday—plus two from Saturday's 50/50 drawing—will be in the drawing (15 lap sponsors + 10 fans = 25 eligible winners).

During driver introductions on Saturday, five (5) random drivers will draw five (5) random names of fans with each fan getting $2,500.

The driver that wins Saturday's A-Main will draw a random name in the final drawing and that person will win $25,000.

USRA Hobby Stocks join the program Saturday.

The pit gates open at 4 p.m., grandstands open at 5 each day. Following the drivers meeting at 6:15, hot laps and qualifying begins at 6:30 with racing to follow around 7:10. All times are Central Standard Time.

For full event information or to buy advance tickets for this once-in-a-lifetime blockbuster, check out the FAST FACTS.

The Mason City Motor Speedway is a 1/3-mile clay oval located 5.1 miles east of I-35 at exit 194 on SR 122 (at the North Iowa Fairgrounds). For more information, call (515) 832-6000 or check out MasonCityMotorSpeedway.com. You can also follow us on Facebook, Instagram and Twitter.

For its Silver Anniversary season, the Summit USMTS National Championship presented by RacinDirt currently features racing at some of America's premier dirt track racing venues. The winners of those events are set to earn more than $300,000 with nearly $2 million in purses and prize money earmarked for the 2023 campaign.

Watch every USMTS event online live and on-demand from anywhere on any device with RacinDirt.

Visit usmts.com to learn more and follow us on Facebook, Instagram, Twitter and YouTube. Click here to get USMTS news delivered to your inbox.

USMTS OFFICIAL SPONSORS: American Racer Racing Tires, Beyea Headers, Callies Performance Products, Chevrolet Performance, Fast Shafts, FK Rod Ends, KSE Racing Products, Malvern Bank, Mesilla Valley Transportation, Nitroquest Media, PEM Racing Gears & Drivetrain, RacinDirt, Summit Racing Equipment, Super Clean, VP Racing, Wieland.

USMTS PARTICIPATING SPONSORS: ARMI Contractors, Boomtest Well Service, Boubin Tire & Automotive, Brodix Cylinder Heads, Collins Brothers Towing, D&T Marriott Enterprise, LLC, DAY Motorsports, Duvall Electric, Gunshepherd.com, Hacienda Mechanical, Kenny's Tile, Mel Hambelton Racing, Midwest Wrap Co., Miller Welders, PBM Performance Products, Rancho Milagro Racing, S&S Fishing & Rental, Salty's BBQ & Catering, Shocker Hitch, Shop Quik Stores, YouDirt.com.

USMTS CONTINGENCY SPONSORS: AERO Race Wheels, AFCO Racing Products, Allstar Performance, BigDeal Car Care, Bryke Racing, BSB Manufacturing, Champ Pans, Deatherage Opticians, Edelbrock, Hooker Harness, Hyperco, Integra Racing Shocks and Springs, JE Pistons, K1 RaceGear by Ryan Bowers Motorsports, Keyser Manufacturing, MD3, MSD Performance, Penske Racing Shocks, Performance Bodies & Parts, QA1, Quarter Master, RacerWebsite.com, Real Racing Wheels, Simpson Performance Products, Swift Springs, Sybesma Graphics, Wehrs Machine & Racing Products, Willy's Carb & Dyno Shop, Wilwood Racing.

USMTS RACETRACKS: 81 Speedway, Ark-La-Tex Speedway, Arrowhead Speedway, Cedar Lake Speedway, Deer Creek Speedway, Fayette County Speedway, Hamilton County Speedway, Humboldt Speedway, I-70 Speedway, Lakeside Speedway, Las Vegas Motor Speedway Dirt Track, Lucas Oil Speedway, Mason City Motor Speedway, Ogilvie Raceway, Rocket Raceway Park.