About Kerb Theory

Racing lines on real corners, drawn out.

Most riding advice is drawn on a whiteboard. A generic corner, a dotted line, “late apex”. Then you get to a real circuit and nothing looks like the diagram.

Kerb Theory starts from the real corner. Every circuit is rebuilt from surveyed map data, so the width, the radius and the length of each turn are measured. We compute the line, then check it against how the world's fastest riders actually take that corner. When the two disagree, the riders win.

What you'll find here

• Circuit guides: every turn, with the line, the braking, the common mistakes and a drill for your next session.
• The first track day checklist: free, three pages, print it and take it with you.
• Short breakdowns every week on YouTube, Instagram and TikTok.

The small print

Riding on a circuit is dangerous. Everything here is general information for track-day riders, not coaching. Kerb Theory isn't affiliated with any circuit, team or championship. Track geometry is © OpenStreetMap contributors.