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| 5/1/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #2 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (250 yamaha) | - | - | - | 2nd |
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| 5/23/2015 | Sunset Speedway Park - Banks, OR 98.7 THE BULL PRESENTS SPRING CHALLENGE Dirt Late Models: NW Extreme Late Models A Modifieds, Restricted 'A' Class, Winged A-Class, Street Stocks, Hornets | Results | | Duke Johnson (Winged A-Class) | 7th | - | 7th | - |
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| 5/24/2015 | Sunset Speedway Park - Banks, OR SPRING CHALLENGE A Modifieds, Restricted 'A' Class, Winged A-Class, Street Stocks, Dirt Late Models, Hornets | Results | | Duke Johnson (Winged A-Class) | 7th | - | 7th | - |
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| 6/5/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #4 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (250 yamaha) | - | - | - | 3rd |
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| 6/13/2015 | Sunset Speedway Park - Banks, OR 98.7 THE BULL PRESENTS NW DWARFS VS. PHRA DWARFS NATIONALS Restricted 'A' Class, Winged A-Class, Street Stocks, Dwarf, Hornets | Results | | Duke Johnson (Winged A-Class) | 4th | - | - | 6th |
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| 6/26/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #5 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (250 yamaha) | - | - | - | 1st |
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| 7/10/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #6 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 6th | | Duke Johnson (250 yamaha) | - | - | - | 2nd |
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| 7/31/2015 | Willamette Speedway - Lebanon, OR Kart Race #7- CROCKERS CARS CAGE KART SUMMER SHOWDOWN Adult Open, Junior Open, Adult Medium, Rookie Class, Dirt Cage Karts Open, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | 3rd | 4th | | Duke Johnson (250 yamaha) | - | - | - | 1st |
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| 8/1/2015 | Willamette Speedway - Lebanon, OR Kart Race #8- CROCKERS CARS CAGE KART SUMMER SHOWDOWN Adult Open, Junior Open, Adult Medium, Rookie Class, Dirt Cage Karts Open, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 5th | | Duke Johnson (250 yamaha) | - | - | - | 1st |
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| 8/8/2015 | Sunset Speedway Park - Banks, OR 98.7 THE BULL PRESENTS THE 2ND ANNUAL DRIVERS APPRECIATION NIGHT (MAINS ONLY) DIRTcar Factory Stock, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Street Stocks, Dirt Late Models, Dwarf, Hornets | Results | | Duke Johnson (Winged A-Class) | - | - | - | 6th |
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| 8/21/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #9 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 6th | | Duke Johnson (250 yamaha) | - | - | - | 6th |
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| 9/6/2015 | Cottage Grove Speedway - Cottage Grove, OR MIKE LYONS MEMORIAL KING OF THE WEST KART RACE Winged A-Class, Adult Medium, Rookie Class, Dirt Cage Karts Open, Dirt Cage Kart Junior 1, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 4th | | Duke Johnson (250 yamaha) | - | - | - | 2nd |
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| 9/7/2015 | Cottage Grove Speedway - Cottage Grove, OR MIKE LYONS MEMORIAL KING OF THE WEST KART RACE Winged A-Class, Adult Medium, Rookie Class, Dirt Cage Karts Open, Dirt Cage Kart Junior 1, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 5th | | Duke Johnson (250 yamaha) | - | - | - | 2nd |
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| 9/11/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #10 Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 3rd | | Duke Johnson (250 yamaha) | - | - | - | 4th |
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| 9/12/2015 | Sunset Speedway Park - Banks, OR BUDWEISER IMCA MODIFIED MAYHEM 100- $750 TO WIN A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Street Stocks | Results | | Duke Johnson (Winged A-Class) | 4th | 3rd | - | 6th |
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| 9/25/2015 | Willamette Speedway - Lebanon, OR Kage Kart Race #11- Championship Night Winged A-Class, Junior Class, Adult Open, Adult Medium, Rookie Class, Junior 1 Animal Dirt Karts, Yamaha Open, Dirt Cage Karts Open, Flat Adult Clone, 125 Yamaha, 250 yamaha | Results | | Duke Johnson (Dirt Cage Karts Open) | - | - | - | 3rd | | Duke Johnson (250 yamaha) | - | - | - | 2nd |
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