Driver Resources
Rules, body measurements and season calendars for circle track racers.
Rules by sanctioning body
USRA
- Body rules for every class Body measurements and a 3D car.
- Stock Car rulebook in plain English Rule by rule, searchable, with errors in the official text fixed and rulebook conflicts marked.
- Official USRA rulebooks, opens in a new tab (usraracing.com)
IMCA
- Official IMCA rulebooks, opens in a new tab (imca.com)
Season calendars
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Central Arizona Raceway 2026 Schedule 2026 scheduleAdd to calendar: Central Arizona Raceway 2026 Schedule 2026 schedule
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Dirt Late Models 2026 2026 scheduleAdd to calendar: Dirt Late Models 2026 2026 schedule
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Hamilton County Speedway 2026 Schedule 2026 scheduleAdd to calendar: Hamilton County Speedway 2026 Schedule 2026 schedule
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I-35 Speedway 2026 Schedule 2026 scheduleAdd to calendar: I-35 Speedway 2026 Schedule 2026 schedule
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Iron Man Stock Cars & B-Mods 2026 Schedule 2026 scheduleAdd to calendar: Iron Man Stock Cars & B-Mods 2026 Schedule 2026 schedule
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Mason City 2026 Schedule 2026 scheduleAdd to calendar: Mason City 2026 Schedule 2026 schedule
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Nevada Speedway 2026 Schedule 2026 scheduleAdd to calendar: Nevada Speedway 2026 Schedule 2026 schedule
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USMTS 2026 Schedule 2026 scheduleAdd to calendar: USMTS 2026 Schedule 2026 schedule