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| 6/9/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Season Opener Synergy Co-op Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 4th | - | - | 6th |
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| 6/23/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Season Opener Cody Plumbing Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 5th | - | - | 5th |
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| 8/3/2021 | Thunder Hill Speedway - Menomonie, WI OUTLAW NATIONALS RACE DAY 1 Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 5th | - | - | 8th |
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| 8/4/2021 | Thunder Hill Speedway - Menomonie, WI OUTLAW NATIONALS RACE DAY 2 Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 4th | - | - | - |
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| 8/7/2021 | Mississippi Thunder Kart Track - Fountain City, WI Battle of the Wings Winged Sprints, 125cc Winged Micros, Junior 1 Lites Dirt Karts, Junior 2 Lites Dirt Karts, Dirt Cage Kart Junior 1, Flat Adult Clone Heavy, 250 Winged Outlaw, 500 Winged Open Outlaw, LO 206 Dirt Karts, Junior Slingshots | Rain Out |
| 8/9/2021 | English Creek Speedway - Knoxville, IA 2021 OUTLAW DIRT KART NATIONALS Winged Outlaw, Adult Heavy, Adult Medium, Restricted Box Stock, Unrestricted Box Stock, 500 Winged Open Outlaw | Results | | Kierston Coss (500 Winged Open Outlaw) | 7th | - | - | - |
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| 8/10/2021 | English Creek Speedway - Knoxville, IA 2021 OUTLAW DIRT KART NATIONALS Winged Outlaw, Adult Heavy, Adult Medium, Restricted Box Stock, Unrestricted Box Stock, 500 Winged Open Outlaw | Results | | Kierston Coss (500 Winged Open Outlaw) | - | - | 7th | - |
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| 8/18/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Timber Inn Bar and Grill Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 6th | - | - | 4th |
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| 9/1/2021 | Thunder Hill Speedway - Menomonie, WI 2021 Dunn Energy Co-op Night "Storm Series Event" Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 6th | - | - | 5th |
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| 9/10/2021 | Thunder Hill Speedway - Menomonie, WI 2021 WI Dirt Track State Championships! Night 1 Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 5th | - | - | 4th |
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| 9/11/2021 | Thunder Hill Speedway - Menomonie, WI 2021 WI Dirt Track State Championships! Junior Class, Rookie Class, 250 Winged Outlaw, 500 Winged Open Outlaw, Junior Sportsman Dirt Karts, Cage Jr. 206 A | Results | | Kierston Coss (500 Winged Open Outlaw) | 5th | - | - | 4th |
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