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| 5/12/2018 | ABC Raceway - Ashland, WI 53rd Annual Season Opener presented by the Northern State Bank Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Canceled |
| 5/26/2018 | ABC Raceway - Ashland, WI Military Appreciation Night presented by the Ashland Area Chamber of Commerce Sport Compact, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 4th | - | - | 4th |
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| 6/9/2018 | ABC Raceway - Ashland, WI Kwik Trip 30 Advantage RV Mod Tour presented by AutoValue B Modifieds, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 2nd | - | - | 11th |
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| 6/23/2018 | ABC Raceway - Ashland, WI North-South Challenge Round 1 360 Sprints - Non-Winged: Traditional Sprint Car Series Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 1st | - | - | 4th |
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| 6/29/2018 | ABC Raceway - Ashland, WI $2,000 to win WISSOTA Late Model Challenge Series WISSOTA Late Model: Wissota Late Model Challenge Series B Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 4th | - | - | 5th |
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| 7/7/2018 | ABC Raceway - Ashland, WI Kid's Bike Race Night presented by Chicago Iron & Supplies Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 6th | - | - | 15th |
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| 8/11/2018 | ABC Raceway - Ashland, WI AFCO ROC Race presented by Safari Bar Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 6th | - | - | 8th |
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| 8/18/2018 | ABC Raceway - Ashland, WI Summer Blast presented by Northern WI Fence & Outlaw Wraps B Modifieds, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 4th | - | - | 2nd |
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| 8/25/2018 | ABC Raceway - Ashland, WI Championship Night presented by Pepsi & WIMI 99.7 Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Pure Stock, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 5th | - | - | 6th |
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| 9/21/2018 | Red Cedar Speedway - Menomonie, WI Punky Manor Challenge Of Champions Night #2 Heats-Presented By: Bill's Distributing & Tim's Automot B Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 4th | - | - | 21st (DNF) |
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| 9/28/2018 | ABC Raceway - Ashland, WI 43rd Annual Red Clay Classic presented by Fastlane Motorsports and Tim's Automotive Machine B Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Super Stock | Results | | Bill Byholm (WISSOTA Modifieds) | 5th | - | 4th | - |
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