diff --git a/src/routes/_authenticated/classes.tsx b/src/routes/_authenticated/classes.tsx
new file mode 100644
index 0000000..a88b9a6
--- /dev/null
+++ b/src/routes/_authenticated/classes.tsx
@@ -0,0 +1,6 @@
+import { createFileRoute, Outlet } from "@tanstack/react-router";
+
+// Layout route for /classes; list is in classes.index.tsx, detail in classes.$id.tsx.
+export const Route = createFileRoute("/_authenticated/classes")({
+  component: () => <Outlet />,
+});