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| 5/15/2020 | Jackson Motorplex - Jackson, MN Great Lakes Shootout presented by Harvey's Roofing & Tweeter Contracting - IRA Sprint Car Series 410 Sprints - Winged: IRA Interstate Racing Association 305 Sprints - Winged | Results | | Hunter Custer (410 Sprints - Winged) | - | - | - | - |
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| 5/16/2020 | Jackson Motorplex - Jackson, MN Great Lakes Shootout presented by Tweeter Contracting and Harvey's Five Star Roofing 410 Sprints - Winged: IRA Interstate Racing Association | Rain Out |
| 5/29/2020 | Park Jefferson International Speedway - Jefferson, SD $6,600 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions B Modifieds | Results | | Hunter Custer (410 Sprints - Winged) | 9th (DNF) | - | - | - |
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| 5/30/2020 | Park Jefferson International Speedway - Jefferson, SD $6,600 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions Stock Cars | Results | | Hunter Custer (410 Sprints - Winged) | 7th | - | 14th | - |
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| 6/13/2020 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Hunter Custer (410 Sprints - Winged) | 7th (DNF) | - | DNS | - |
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| 6/20/2020 | Beaver Dam Raceway - Beaver Dam, WI Jim "JB" Boyd Memorial Presented by Karavan Trailers 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Hunter Custer (410 Sprints - Winged) | - | - | - | - |
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| 7/2/2020 | Cedar Lake Speedway - New Richmond, WI FVP Platinum Battery Showdown 410 Sprints - Winged: World of Outlaws 360 Sprints - Non-Winged: Traditional Sprint Car Series Dirt Super Late Models | Results | | Hunter Custer (410 Sprints - Winged) | - | - | 12th | - |
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| 7/5/2020 | 141 Speedway - Maribel, WI Sunday Funday IRA Bumper to Bumper Sprints 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: Wisconsin Illinois Mini Sprints with IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | - | 21st |
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| 7/18/2020 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | - | 19th |
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| 7/19/2020 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints Hornets | Results | | Hunter Custer (410 Sprints - Winged) | 9th | - | - | 14th |
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| 7/25/2020 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Semi-Pro Legends | Results | | Hunter Custer (410 Sprints - Winged) | 9th | - | 6th | 21st |
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| 7/30/2020 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI Rayce Rudeen Foundation Race $26,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions | Results | | Hunter Custer (410 Sprints - Winged) | 7th | - | - | - |
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| 7/31/2020 | Langlade County Speedway - Antigo, WI Langlade County Fair 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Hunter Custer (410 Sprints - Winged) | 4th | - | - | 10th |
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| 8/1/2020 | ABC Raceway - Ashland, WI IRA 410 SPRINTS Presented by the ABC Sportsmens Club & Heartland Communications! 410 Sprints - Winged: IRA Interstate Racing Association A Modifieds, Dirt 6-cyl Stock Cars, WISSOTA Midwest Mods, WISSOTA Hornet | Rain Out |
| 8/8/2020 | Wilmot Raceway - Wilmot, WI Founders Night 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Hunter Custer (410 Sprints - Winged) | 7th | - | 3rd | 15th |
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| 8/15/2020 | Fairbury Speedway - Fairbury, IL 410 Sprints - Winged: IRA Interstate Racing Association with MOWA-Midwest Open Wheel Association DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Hunter Custer (410 Sprints - Winged) | - | - | - | - |
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| 8/21/2020 | Wilmot Raceway - Wilmot, WI All Star Circuit of Champions with IRA Sprints 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions A Modifieds, Street Stocks, Hornets | Results | | Hunter Custer (410 Sprints - Winged) | 9th | - | 13th (DNF) | - |
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| 8/22/2020 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints Hornets | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | - | 17th |
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| 8/29/2020 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: IRA Interstate Racing Association Semi-Pro Legends | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | 6th | 20th |
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| 9/4/2020 | Dodge County Fairgrounds - Beaver Dam, WI Harry Neitzel Memorial 410 Sprints - Winged: IRA Interstate Racing Association 360 Sprints - Winged | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | 7th | 17th |
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| 9/5/2020 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI Sheboygan County Fair 410 Sprints - Winged: IRA Interstate Racing Association | Results | | Hunter Custer (410 Sprints - Winged) | 8th | - | 7th | - |
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| 9/11/2020 | Outagamie Speedway - Seymour, WI 410 Sprints - Winged: IRA Interstate Racing Association Baby Grand, IMCA Northern SportMod | Results | | Hunter Custer (410 Sprints - Winged) | 6th | - | - | 17th |
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| 9/12/2020 | Cedar Lake Speedway - New Richmond, WI 20th Annual Jerry Richert Memorial 360 Sprints - Winged: Midwest Power Series 410 Sprints - Winged: IRA Interstate Racing Association Limited Sprints - Winged: Upper Midwest Sprint Car Series 360 Sprints - Non-Winged: Traditional Sprint Car Series Winged A-Class, 305 Sprints - Non-Winged | Results | | Hunter Custer (410 Sprints - Winged) | 6th | - | - | 14th |
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| 9/19/2020 | Beaver Dam Raceway - Beaver Dam, WI Semmelmann Memorial 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints Semi-Pro Legends | Results | | Hunter Custer (410 Sprints - Winged) | 7th | - | 1st | 15th |
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| 9/25/2020 | Dodge County Fairgrounds - Beaver Dam, WI Schmidt Memorial 410 Sprints - Winged: IRA Interstate Racing Association Non Wing Crate Sprints: Wisconsin wingLESS Sprints 360 Sprints - Winged | Results | | Hunter Custer (410 Sprints - Winged) | 6th | - | - | 18th |
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| 9/26/2020 | Plymouth Dirt Track-Sheboygan Co Fair - Plymouth, WI Wisconsin Sprint Car Championship Night 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Hunter Custer (410 Sprints - Winged) | 9th | - | 2nd | 20th |
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