With heat races for four classes and one feature race in the books, the rain that had threatened off and on all day finally made good on it’s threats and washed out the final three main events of the program Sunday at the Mason City Motor Speedway.

In search of his fifth straight Summit USRA Weekly Racing Series national title, Dustin Gulbrandson of Sioux Falls, S.D., marched to victory in the Cook Racing Supplies USRA Hobby Stocks shortly before the skies opened up and forced the postponement of the night’s final three features.

"The top side was fast and smooth," Gulbrandson said after the win. "The car handled really well. I haven't drawn very good here in the past, so it was good to start second row."

Clear Lake’s Chanse Hollatz finished in the runner-up position with Derek Willert of Rockford third, 12th-starting Cory Gansen of Clear Lake finishing fourth and 10th-starting Eric Stanton of Carlisle completing the top five.

Prior to getting soaked, defending Iron Man Challenge champion Dan Hovden of Decorah picked up a heat race win in the Out-Pace USRA B-Mods presented by Pace Performance, along with Alex Zwanziger of Nashua and Ben Moudry of Cottage Grove, Minn.

In heat race action for the Holley USRA Stock Cars presented by Medieval Chassis, current series points leader Dillon Anderson of Decorah scored a win, and so did Plymouth’s Andrew Borchardt and defending series champ Derek Green of Granada, Minn.

Matt Oberhelman of Fort Dodge claimed the lone USRA Tuner heat race.

All three rained-out feature races have been postponed to Sunday, July 15, and will kick off that night’s program with a full show featuring all four Summit USRA Weekly Racing Series divisions to follow.

BOONE RIVER BAYOU ON TAP: The biggest race of the summer is coming this Tuesday and Wednesday, June 19-20, with the inaugural Boone River Bayou Dirt Track Championships at the Hamilton County Speedway driven by Spangler Automotive.

Last year's attempted launch was washed out by Mother Nature, and once again the nation’s best drivers in four big classes will be battling for some incredible paydays at the historic half-mile in Webster City, Iowa, this year.

Both nights will also be a part of the popular Iron Man Challenge for Holley USRA Stock Cars and Out-Pace USRA B-Mods with a complete show each night for the Stock Cars, B-Mods and Cook Racing Supplies USRA Hobby Stocks.

Tuesday’s preliminaries will see the Stock Car winner taking home $700, the B-Mod winner gets $600 and the Hobby Stock feature winner will pocket $500 with the top eight finishers in each class locked into Wednesday’s main events.

Tuners will also run a complete show on Tuesday only with a $200 top prize up for grabs for the four-cylinder racers.

Also on Tuesday will be the King of the Hill match races for Stock Cars, B-Mods and Hobby Stocks. Two cars will battle for two green-white-checkered laps with the winner advancing to the next round and the loser packing his bags. The overall winner will take the entire pot in each class.

Big bucks and bragging rights are up for grabs on Wednesday. Stock Cars will compete for a $2,500 top prize while B-Mod drivers will duke it out for $2,000 to win and Hobby Stocks for $1,200 to win.

Opening in July 1910, the Hamilton County Speedway is the oldest speedway in the state of Iowa. In 1938, work began on the current location at the Hamilton County Fairgrounds. The semi-banked half-mile dirt track was completed in the spring of 1939, and the first races were held on the track in September of that year.

The Hamilton County Speedway driven by Spangler Automotive is located off of US 20 at exit 140, then 1.2 miles north, then 0.5 mile east on Bank St., then 0.4 mile south on Bluff St. in Webster City, Iowa (1200 Bluff St, Webster City, IA 50595) at the historic Hamilton County Fairgrounds.

For more information, call (515) 832-6000 or check out www.HamiltonCoSpeedway.com. You can also get social on Facebook at www.facebook.com/RaceWebsterCity or Twitter at www.twitter.com/HamiltonCoSpeed (@HamiltonCoSpeed).

To learn more about the USRA, visit www.usraracing.com or call (515) 832-6000. You can also like USRA Racing on Facebook at www.facebook.com/usraracing, follow www.twitter.com/usraracing on Twitter and check out the USRA YouTube channel at www.youtube.com/usratv. Keep up to speed with everything USRA by joining our email list at www.usraracing.com/subscribe.

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OFFICIAL RESULTS
United States Racing Association
Summit USRA Weekly Racing Series
Iron Man Challenge
Mason City Motor Speedway, Mason City, Iowa
Sunday, June 17, 2018

Showing finishing position, starting position in parentheses, car number, driver, hometown, laps completed and money won.

OUT-PACE USRA B-MODS

Chevrolet Performance Heat #1:
1. (5) 16 Dan Hovden, Decorah, Iowa.
2. (2) 24C Jim Chisholm, Osage, Iowa.
3. (1) 56H Brandon Hare, Elma, Iowa.
4. (3) 10T Trevor Fecht, Allison, Iowa.
5. (4) 11X Alex Yohn, Clear Lake, Iowa.
6. (9) 56 Ty Griffith, Webster City, Iowa.
7. (7) 66 Levi Chipp, Latimer, Iowa.
8. (6) 12B Rick Baxter, Nashua, Iowa.
9. (8) 69 Kyle Germundson, Mason City, Iowa.

CP-Carrillo Heat #2:
1. (3) 32Z Alex Zwanziger, Nashua, Iowa.
2. (1) 28 Autum Anderson, Mason City, Iowa.
3. (8) 65J Josh Appel, Mason City, Iowa.
4. (4) 02 Cole Denner, New Hampton, Iowa.
5. (9) 83X Kadden Kath, Owatonna, Minn.
6. (7) 86 Dan Tenold, Northwood, Iowa.
7. (5) 18 Kyle Steuber, Fairmont, Minn.
8. (6) 6 Chanse Hollatz, , .
9. (2) 97 Rich Lewerke, Mason City, Iowa.

Pace Performance Heat #3:
1. (4) 85 Ben Moudry, Cottage Grove, Minn.
2. (2) 3A Taylor Ausrud, Hayfield, Minn.
3. (8) 81 Jared Boumeester, Waseca, Minn.
4. (1) 27S Jason Schlangen, Cresco, Iowa.
5. (3) 49 Nate Whitehurst, Mason City, Iowa.
6. (6) 75 Cole Suckow, Cresco, Iowa.
7. (7) 11 Jake Masters, Graettinger, Iowa.
8. (5) 52 Carter Koop, Rockwell, Iowa.
9. (9) 5 Josh Ressler, Mason City, Iowa.

Summit Racing Equipment “A” Main:
Rained out, rescheduled for July 15

Entries: 27.
Next Race: Tuesday-Wednesday, June 19-20, Hamilton County Speedway, Webster City, Iowa.
Points Standings: Hovden 737, Moudry 570, Suckow 496, Jeremiah Christensen 422, Cole Christensen 406, Denner 354, Dustin Kruse 314, J.C. Morton 282, Cody Jolly 279, Alex Williamson 276.

HOLLEY USRA STOCK CARS

Medieval Chassis Heat #1:
1. (2) 44 Dillon Anderson, Decorah, Iowa.
2. (4) 24 Josh Zieman, Plymouth, Iowa.
3. (1) 27 Jamie Anderson, Mason City, Iowa.
4. (5) 2J Steve Jackson, Polk City, Iowa.
5. (6) 14M Brian Mahlstedt, Ionia, Iowa.
6. (8) 11 Jesse Brown, Nashua, Iowa.
7. (7) 21R Kevin Vogt, Rose Creek, Minn.
8. (3) 19S Nadia Treichel, Greene, Iowa.

Fast Shafts Heat #2:
1. (2) 21 Andrew Borchardt, Plymouth, Iowa.
2. (7) 9 Dean Cornelius, New Prague, Minn.
3. (5) 05 Brett Heeter, Kansas City, Kan.
4. (1) 98 Kevin Stoa, Albert Lea, Minn.
5. (3) 87T Travis Shipman, Mason City, Iowa.
6. (4) 38C Kellie Schmit, Britt, Iowa.
7. (6) 87 Dylan Suhr, Waterloo, Iowa.
8. (8) 32 Dan Feltus, Allison, Iowa.

MSD Performance Heat #3:
1. (2) 32X Derek Green, Granada, Minn.
2. (5) 15 Mitch Hovden, Decorah, Iowa.
3. (3) 97 Lynn Panos, Calmar, Iowa.
4. (7) 67 Kyle Falck, Decorah, Iowa.
5. (6) 5 Luke Sathoff, Jackson, Minn.
6. (1) 14 Todd Staley, Webster City, Iowa.
7. (8) 30 Chris Adams, McIntire, Iowa.
8. (4) 7T Rick Todd, Des Moines, Iowa.

Summit Racing Equipment “A” Main:
Rained out, rescheduled for July 15

Entries: 24.
Next Race: Tuesday-Wednesday, June 19-20, Hamilton County Speedway, Webster City, Iowa.
Points Standings: D. Anderson 452, Panos 424, Green 423, Falck 345, Darrin Korthals 342, Brown 341, Cornelius 339, Heeter 287, Jackson 282, Hovden 237.

COOK RACING SUPPLIES USRA HOBBY STOCKS

Allstar Performance Heat Race #1:
1. (2) 18Z Zac Smith, Mason City, Iowa.
2. (4) 1 Derek Willert, Rockford, Iowa.
3. (3) 7B Eric Stanton, Carlisle, Iowa.
4. (7) 6H Chanse Hollatz, Clear Lake, Iowa.
5. (6) 6 Dustin Gulbrandson, Sioux Falls, S.D.
6. (5) 56 Jake Blau, Latimer, Iowa.
7. (1) 01 Kory Adams, Stacyville, Iowa.
8. (8) 13 Tanner Green, Hampton, Iowa.

Edelbrock Heat Race #2:
1. (1) 83W Matt White, Nashua, Iowa.
2. (3) 32 Tony Smidt, Britt, Iowa.
3. (4) 55B Blaine Hanson, Klemme, Iowa.
4. (6) 32J Austin Jahnz, Lewisville, Minn.
5. (5) 83 Scott Dobel, Manly, Iowa.
6. (7) 14 Cory Gansen, Clear Lake, Iowa.
7. (8) 15 Travis Johnson, Fertile, Iowa.
8. (2) 76 Ben Peterson, Granada, Minn.

Summit Racing Equipment “A” Main:
1. (4) 6 Dustin Gulbrandson, Sioux Falls, S.D., $450.
2. (2) 6H Chanse Hollatz, Clear Lake, Iowa, $350.
3. (6) 1 Derek Willert, Rockford, Iowa, $250.
4. (12) 14 Cory Gansen, Clear Lake, Iowa, $200.
5. (10) 7B Eric Stanton, Carlisle, Iowa, $175.
6. (5) 83W Matt White, Nashua, Iowa, $150.
7. (1) 18Z Zac Smith, Mason City, Iowa, $125.
8. (7) 83 Scott Dobel, Manly, Iowa, $100.
9. (9) 32 Tony Smidt, Britt, Iowa, $90.
10. (3) 32J Austin Jahnz, Lewisville, Minn., $80.
11. (15) 13 Tanner Green, Hampton, Iowa, $70.
12. (8) 55B Blaine Hanson, Klemme, Iowa, $60.
13. (13) 01 Kory Adams, Stacyville, Iowa, $55.
14. (14) 15 Travis Johnson, Fertile, Iowa, $50.
15. (16) 76 Ben Peterson, Granada, Minn., $50.
16. (11) 56 Jake Blau, Latimer, Iowa, $50.

USRA TUNERS

Allstar Performance Heat:
1. (1) 41 Matt Oberhelman, Fort Dodge, Iowa.
2. (5) 9 Nate Coopman, Mankato, Minn.
3. (2) 37 Ryan Bryant, Mason City, Iowa.
4. (3) 5 Oliver Monson, Clear Lake, Iowa.
5. (4) N07 Brad Mayland, Britt, Iowa.
6. (6) 7 Stephanie Coopman, Mankato, Minn.

Summit Racing Equipment “A” Main:
Rained out, rescheduled for July 15

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USRA OFFICIAL SPONSORS: American Racer Racing Tires, Argo Manufacturing, Chevrolet Performance, CP-Carrillo, Fast Shafts, Intercomp, KSE Racing Products, Mesilla Valley Transportation, MSD Performance, Nitroquest Media, Pace Performance, RacinDirt.com, Summit Racing Equipment.

USRA PARTICIPATING SPONSORS: ASi Racewear, Boubin Tire & Automotive, Brodix Cylinder Heads, Cook Racing Supplies, ElbowsUp.com, Holley Performance Products, PBM Performance Products, YouDirt.com.

USRA CONTINGENCY SPONSORS: 905 Ink, AFCO Racing Products, Allstar Performance, Beyea Custom Headers, BSB Manufacturing, Edelbrock, Forty9 Designs, Genesis Racing Shocks, Hooker Harness, Integra Shocks & Springs, Jerovetz Motorsports Racing Parts, Keyser Manufacturing, Medieval Chassis, Mitchell Machine, Mr. Gasket, Out-Pace Racing Products, QA1, Quick Time, RacerWebsite.com, Real Racing Wheels, Sybesma Graphics, Wehrs Machine & Racing Products, Wilwood Disc Brakes.

USRA RACE TRACKS: 81 Speedway, Alien Motor Speedway, Arizona Speedway, Caney Valley Speedway, Chateau Speedway, Cresco Speedway, Deer Creek Speedway, Devil’s Bowl Speedway, Fayette County Speedway, Hamilton County Speedway, Humboldt Speedway, I-35 Speedway, Kennedale Speedway Park, Lake Ozark Speedway, Lakeside Speedway, Lawton Speedway, Lebanon Midway Speedway, Legit Speedway Park, Lucas Oil Speedway, Mason City Motor Speedway, Mississippi Thunder Speedway, Monett Speedway, Nobles County Speedway, Park Jefferson Speedway, Rapid Speedway, Red Cedar Speedway, RPM Speedway, Route 66 Motor Speedway, Salina Highbanks Speedway, Sioux Speedway, Southern Iowa Speedway, Southern New Mexico Speedway, Southern Oklahoma Speedway, Springfield Raceway, Superbowl Speedway, Tri-State Speedway, Upper Iowa Speedway, Vado Speedway Park, West Texas Speedway.