SCCA National Solo Rules 

The SCCA® National Solo® Rules are a member-generated ruleset built and refined throughout the past 45 years. This rule book is published annually and each aspect of a solo event from safety, procedure and classing is covered so it is used by both officials and competitors.  

Building and maintaining the SCCA Solo Rules involves member requests and input, review by the overall Solo Events Board and advisory committees before they are either rejected or the SCCA Board of directors votes them into action.  

Keep reading below for rules, how you can be involved in rule-changes, and other important documents for solo competitors. 

NOTE: Technical Bulletins are periodically issued in Fastrack® News that supersede the information in the Solo® Rules

The Rules are available on-line in Adobe Acrobat format by the SCCA Solo Department to our members, entrants, volunteers, and anyone interested in learning more about the technical regulations governing SCCA Solo competition.

We have chosen to serve this document in its original format using Adobe®'s Portable Document Format (PDF). This allows important documents and forms to be just a mouse click away. With the free Adobe Reader software, users on any computing platform can navigate, scale, zoom-in, and print PDF files directly within their web browsers.


SCCA SOLO RULES (Click red links to open/download)

2017 SCCA® National Solo® Rules -- 2017-07-26 (4.1MB)

A printed version of the Solo® Rules is available from Amazon.

2018 Preliminary Kart Rules:


Supplemental Classes

Supplemental Classes are offered at National Solo® events, but do not compete for a national championship.


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2017 SCCA® ProSolo® Rules -- 2017-03-01 updated

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Solo Rule Changes, Member Feedback, and Clarifications


Want to make a rules change proposal? Write to the Solo® Events Board (SEB).

To write in a request or to give input on a potential rule change, click the link above to take you to the submission form. Once on the page - Select Solo Events Board from the, "choose program board" field, then select your category and class to make sure your letter makes its way to the right place. 

Process Flowchart for Rule Changes



Quick Reference Sheets

Member Advisory:

 2014-7-25 Kart Safety

Solo® Event Waiver Procedures (pre-event) and Checklist (during event):


Still have concerns? Call Doug at 1-800-770-2055 or email at dgill@scca.com.