diff --git a/packages/docusaurus-plugin-debug/src/index.ts b/packages/docusaurus-plugin-debug/src/index.ts
index 01a9e0a4e0..26fcc297a9 100644
--- a/packages/docusaurus-plugin-debug/src/index.ts
+++ b/packages/docusaurus-plugin-debug/src/index.ts
@@ -9,6 +9,8 @@ import type {LoadContext, Plugin} from '@docusaurus/types';
 import {docuHash, normalizeUrl, posixPath} from '@docusaurus/utils';
 import path from 'path';
 
+export const routeBasePath = '__docusaurus/debug';
+
 export default function pluginDebug({
   siteConfig: {baseUrl},
   generatedFilesDir,
@@ -40,37 +42,37 @@ export default function pluginDebug({
 
       // Home is config (duplicate for now)
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug']),
+        path: normalizeUrl([baseUrl, routeBasePath]),
         component: '@theme/DebugConfig',
         exact: true,
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/config']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'config']),
         component: '@theme/DebugConfig',
         exact: true,
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/metadata']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'metadata']),
         component: '@theme/DebugSiteMetadata',
         exact: true,
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/registry']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'registry']),
         component: '@theme/DebugRegistry',
         exact: true,
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/routes']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'routes']),
         component: '@theme/DebugRoutes',
         exact: true,
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/content']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'content']),
         component: '@theme/DebugContent',
         exact: true,
         modules: {
@@ -79,7 +81,7 @@ export default function pluginDebug({
       });
 
       addRoute({
-        path: normalizeUrl([baseUrl, '__docusaurus/debug/globalData']),
+        path: normalizeUrl([baseUrl, routeBasePath, 'globalData']),
         component: '@theme/DebugGlobalData',
         exact: true,
       });
diff --git a/packages/docusaurus-plugin-debug/src/plugin-debug.d.ts b/packages/docusaurus-plugin-debug/src/plugin-debug.d.ts
index 93b666dd4f..6bde34dab9 100644
--- a/packages/docusaurus-plugin-debug/src/plugin-debug.d.ts
+++ b/packages/docusaurus-plugin-debug/src/plugin-debug.d.ts
@@ -7,6 +7,10 @@
 
 /// <reference types="@docusaurus/module-type-aliases" />
 
+declare module '@docusaurus/plugin-debug' {
+  export const routeBasePath: string;
+}
+
 declare module '@theme/DebugConfig' {
   export default function DebugMetadata(): JSX.Element;
 }
diff --git a/packages/docusaurus-preset-classic/src/index.ts b/packages/docusaurus-preset-classic/src/index.ts
index e3059a5206..79a60b65c9 100644
--- a/packages/docusaurus-preset-classic/src/index.ts
+++ b/packages/docusaurus-preset-classic/src/index.ts
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+import {routeBasePath as debugPluginRouteBasePath} from '@docusaurus/plugin-debug';
 import type {
   Preset,
   LoadContext,
@@ -28,7 +29,7 @@ export default function preset(
   opts: Options = {},
 ): Preset {
   const {siteConfig} = context;
-  const {themeConfig} = siteConfig;
+  const {themeConfig, baseUrl} = siteConfig;
   const {algolia} = themeConfig as Partial<ThemeConfig>;
   const isProd = process.env.NODE_ENV === 'production';
   const {
@@ -36,12 +37,13 @@ export default function preset(
     docs,
     blog,
     pages,
-    sitemap,
+    sitemap = {},
     theme,
     googleAnalytics,
     gtag,
     ...rest
   } = opts;
+  const isDebugEnabled = debug || (debug === undefined && !isProd);
 
   const themes: PluginConfig[] = [];
   themes.push(makePluginConfig('@docusaurus/theme-classic', theme));
@@ -74,13 +76,17 @@ export default function preset(
       makePluginConfig('@docusaurus/plugin-google-analytics', googleAnalytics),
     );
   }
-  if (debug || (debug === undefined && !isProd)) {
+  if (isDebugEnabled) {
     plugins.push(require.resolve('@docusaurus/plugin-debug'));
   }
   if (gtag) {
     plugins.push(makePluginConfig('@docusaurus/plugin-google-gtag', gtag));
   }
   if (isProd && sitemap !== false) {
+    if (isDebugEnabled) {
+      sitemap.ignorePatterns ??= [];
+      sitemap.ignorePatterns.push(`${baseUrl}${debugPluginRouteBasePath}/**`);
+    }
     plugins.push(makePluginConfig('@docusaurus/plugin-sitemap', sitemap));
   }
   if (Object.keys(rest).length > 0) {