diff --git a/src/components/ContentNode/Reference.vue b/src/components/ContentNode/Reference.vue
index d9dbe19ae..b959691f9 100644
--- a/src/components/ContentNode/Reference.vue
+++ b/src/components/ContentNode/Reference.vue
@@ -70,7 +70,7 @@ export default {
       } = this.$router.resolve(url) || {};
 
       // Resolved internal URLs don't have the "not found" route.
-      return name !== notFoundRouteName;
+      return !name.startsWith(notFoundRouteName);
     },
     isSymbolReference() {
       return this.kind === 'symbol' && !this.hasInlineFormatting
diff --git a/src/routes.js b/src/routes.js
index 0c928ce37..11343bed5 100644
--- a/src/routes.js
+++ b/src/routes.js
@@ -16,7 +16,20 @@ import {
 import ServerError from 'theme/views/ServerError.vue';
 import NotFound from 'theme/views/NotFound.vue';
 
-export default [
+export const fallbackRoutes = [
+  {
+    path: '*',
+    name: notFoundRouteName,
+    component: NotFound,
+  },
+  {
+    path: '*', // purposefully unreachable without a forced navigation
+    name: serverErrorRouteName,
+    component: ServerError,
+  },
+];
+
+export const pagesRoutes = [
   {
     path: '/tutorials/:id',
     name: 'tutorials-overview',
@@ -38,14 +51,9 @@ export default [
       /* webpackChunkName: "documentation-topic" */ 'theme/views/DocumentationTopic.vue'
     ),
   },
-  {
-    path: '*',
-    name: notFoundRouteName,
-    component: NotFound,
-  },
-  {
-    path: '*', // purposefully unreachable without a forced navigation
-    name: serverErrorRouteName,
-    component: ServerError,
-  },
+];
+
+export default [
+  ...pagesRoutes,
+  ...fallbackRoutes,
 ];
diff --git a/src/setup-utils/SwiftDocCRenderRouter.js b/src/setup-utils/SwiftDocCRenderRouter.js
index 87ba2a4ac..26a70308d 100644
--- a/src/setup-utils/SwiftDocCRenderRouter.js
+++ b/src/setup-utils/SwiftDocCRenderRouter.js
@@ -9,25 +9,18 @@
 */
 
 import Router from 'vue-router';
-import {
-  notFoundRouteName,
-  serverErrorRouteName,
-} from 'docc-render/constants/router';
 import {
   saveScrollOnReload,
   restoreScrollOnReload,
   scrollBehavior,
 } from 'docc-render/utils/router-utils';
-import routes from 'docc-render/routes';
+import routes, { fallbackRoutes } from 'docc-render/routes';
 import { baseUrl } from 'docc-render/utils/theme-settings';
 import { addPrefixedRoutes } from 'docc-render/utils/route-utils';
 
 const defaultRoutes = [
-  ...routes,
-  ...addPrefixedRoutes(routes, [
-    notFoundRouteName,
-    serverErrorRouteName,
-  ]),
+  ...addPrefixedRoutes(routes),
+  ...fallbackRoutes,
 ];
 
 export default function createRouterInstance(routerConfig = {}) {
diff --git a/src/utils/route-utils.js b/src/utils/route-utils.js
index f543ca810..1ca94e09f 100644
--- a/src/utils/route-utils.js
+++ b/src/utils/route-utils.js
@@ -7,6 +7,7 @@
  * See https://swift.org/LICENSE.txt for license information
  * See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
+import { pathJoin } from 'docc-render/utils/assets';
 
 const localEnvs = [
   { pathPrefix: '/:locale?', nameSuffix: '-locale' },
@@ -26,7 +27,7 @@ export function addPrefixedRoutes(routes, skipRoutes = [], envs = localEnvs) {
       .filter(route => !skipRoutes.includes(route.name))
       .map(route => ({
         ...route,
-        path: current.pathPrefix + route.path,
+        path: pathJoin([current.pathPrefix, route.path]),
         name: route.name + current.nameSuffix,
       })),
   ), []);
diff --git a/tests/unit/setup-utils/SwiftDocCRenderRouter.spec.js b/tests/unit/setup-utils/SwiftDocCRenderRouter.spec.js
index 5d6df4b34..ecbc0abf1 100644
--- a/tests/unit/setup-utils/SwiftDocCRenderRouter.spec.js
+++ b/tests/unit/setup-utils/SwiftDocCRenderRouter.spec.js
@@ -118,8 +118,8 @@ describe('SwiftDocCRenderRouter', () => {
 
     const resolve = path => router.resolve(path).route;
 
-    it('resolves paths to the "tutorials-overview" route', () => {
-      const route = 'tutorials-overview';
+    it('resolves paths to the "tutorials-overview-locale" route', () => {
+      const route = 'tutorials-overview-locale';
 
       expect(resolve('/tutorials/foo').name).toBe(route);
       expect(resolve('/tutorials/bar').name).toBe(route);
@@ -140,8 +140,8 @@ describe('SwiftDocCRenderRouter', () => {
       expect(resolve('/zh-CN/tutorials/foo/bar').name).not.toBe(route);
     });
 
-    it('resolves paths to the "topic" route', () => {
-      const route = 'topic';
+    it('resolves paths to the "topic-locale" route', () => {
+      const route = 'topic-locale';
       expect(resolve('/tutorials/foo/bar').name).toBe(route);
       expect(resolve('/tutorials/foobar/baz').name).toBe(route);
       expect(resolve('/tutorials/documentation/foo').name).toBe(route);
@@ -163,8 +163,8 @@ describe('SwiftDocCRenderRouter', () => {
       });
     });
 
-    it('resolves paths to the "documentation-topic" route', () => {
-      const route = 'documentation-topic';
+    it('resolves paths to the "documentation-topic-locale" route', () => {
+      const route = 'documentation-topic-locale';
 
       expect(resolve('/documentation/foo').name).toBe(route);
       expect(resolve('/documentation/bar').name).toBe(route);
diff --git a/tests/unit/utils/route-utils.spec.js b/tests/unit/utils/route-utils.spec.js
index f5ac2a011..343f3e4f8 100644
--- a/tests/unit/utils/route-utils.spec.js
+++ b/tests/unit/utils/route-utils.spec.js
@@ -50,4 +50,49 @@ describe('route-utils', () => {
       { meta: { b: 'b' }, name: 'b-foo', path: '/foo/bar/path/to/b' },
     ]);
   });
+
+  it('handles routes with root path', () => {
+    const rootRoutes = [
+      { name: 'home', path: '/', meta: { isHome: true } },
+    ];
+
+    const result = addPrefixedRoutes(rootRoutes);
+    expect(result[0].path).toBe('/:locale?/');
+  });
+
+  it('handles routes with trailing slashes', () => {
+    const trailingSlashRoutes = [
+      { name: 'trailing', path: '/path/with/trailing/', meta: {} },
+    ];
+
+    const result = addPrefixedRoutes(trailingSlashRoutes);
+    expect(result[0].path).toBe('/:locale?/path/with/trailing/');
+  });
+
+  it('handles routes without trailing slashes', () => {
+    const trailingSlashRoutes = [
+      { name: 'trailing', path: 'path/with/trailing', meta: {} },
+    ];
+
+    const result = addPrefixedRoutes(trailingSlashRoutes);
+    expect(result[0].path).toBe('/:locale?/path/with/trailing');
+  });
+
+  it('handles pathPrefix with trailing slash', () => {
+    const envWithTrailingSlash = [
+      { pathPrefix: '/api/', nameSuffix: '-api' },
+    ];
+
+    const result = addPrefixedRoutes([routes[0]], [], envWithTrailingSlash);
+    expect(result[0].path).toBe('/api/path/to/a');
+  });
+
+  it('handles pathPrefix without leading slash', () => {
+    const envWithoutLeadingSlash = [
+      { pathPrefix: 'api', nameSuffix: '-api' },
+    ];
+
+    const result = addPrefixedRoutes([routes[0]], [], envWithoutLeadingSlash);
+    expect(result[0].path).toBe('api/path/to/a');
+  });
 });