diff --git a/apps/journal/app/root.tsx b/apps/journal/app/root.tsx
index 51db198..fb07974 100644
--- a/apps/journal/app/root.tsx
+++ b/apps/journal/app/root.tsx
@@ -1,5 +1,5 @@
 import { useEffect } from "react";
-import { Links, Meta, Outlet, Scripts, ScrollRestoration, isRouteErrorResponse } from "react-router";
+import { Links, Meta, Outlet, Scripts, ScrollRestoration, isRouteErrorResponse, useLocation, Form, Link } from "react-router";
 import type { LinksFunction } from "react-router";
 import type { Route } from "./+types/root";
 import * as Sentry from "@sentry/react";
@@ -35,6 +35,75 @@ export async function loader({ request }: Route.LoaderArgs) {
   return { user: user ? { id: user.id, username: user.username } : null };
 }
 
+function NavBar({ user }: { user: { id: string; username: string } | null }) {
+  const { t } = useTranslation("journal");
+  const location = useLocation();
+
+  const isActive = (path: string) =>
+    location.pathname === path || location.pathname.startsWith(path + "/");
+
+  const linkClass = (path: string) =>
+    `text-sm font-medium ${
+      isActive(path)
+        ? "text-blue-600"
+        : "text-gray-600 hover:text-gray-900"
+    }`;
+
+  return (
+    <nav className="border-b border-gray-200 bg-white px-4 py-2">
+      <div className="mx-auto flex max-w-6xl items-center justify-between">
+        <div className="flex items-center gap-6">
+          <Link to="/" className="text-lg font-semibold text-gray-900">
+            {t("title")}
+          </Link>
+          {user && (
+            <>
+              <Link to="/routes" className={linkClass("/routes")}>
+                {t("nav.routes")}
+              </Link>
+              <Link to="/activities" className={linkClass("/activities")}>
+                {t("nav.activities")}
+              </Link>
+            </>
+          )}
+        </div>
+        <div className="flex items-center gap-4">
+          {user ? (
+            <>
+              <Link
+                to={`/users/${user.username}`}
+                className={linkClass(`/users/${user.username}`)}
+              >
+                {user.username}
+              </Link>
+              <Form method="post" action="/auth/logout">
+                <button
+                  type="submit"
+                  className="text-sm font-medium text-gray-600 hover:text-gray-900"
+                >
+                  {t("nav.logout")}
+                </button>
+              </Form>
+            </>
+          ) : (
+            <>
+              <Link to="/auth/login" className={linkClass("/auth/login")}>
+                {t("nav.login")}
+              </Link>
+              <Link
+                to="/auth/register"
+                className="rounded-md bg-blue-600 px-3 py-1.5 text-sm font-medium text-white hover:bg-blue-700"
+              >
+                {t("nav.register")}
+              </Link>
+            </>
+          )}
+        </div>
+      </div>
+    </nav>
+  );
+}
+
 export default function App({ loaderData }: Route.ComponentProps) {
   const user = loaderData?.user;
   useEffect(() => {
@@ -45,7 +114,12 @@ export default function App({ loaderData }: Route.ComponentProps) {
     }
   }, [user]);
 
-  return <Outlet />;
+  return (
+    <>
+      <NavBar user={user ?? null} />
+      <Outlet />
+    </>
+  );
 }
 
 export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
diff --git a/apps/planner/app/components/SessionView.tsx b/apps/planner/app/components/SessionView.tsx
index bf56abc..615d043 100644
--- a/apps/planner/app/components/SessionView.tsx
+++ b/apps/planner/app/components/SessionView.tsx
@@ -1,5 +1,6 @@
 import { Suspense, lazy, useState, useCallback, useEffect } from "react";
 import { useTranslation } from "react-i18next";
+import { Link } from "react-router";
 import * as Sentry from "@sentry/react";
 import { useYjs } from "~/lib/use-yjs";
 import { useRouting } from "~/lib/use-routing";
@@ -49,7 +50,9 @@ export function SessionView({ sessionId, callbackUrl, callbackToken, returnUrl,
     <>
       <header className="flex flex-wrap items-center justify-between gap-2 border-b border-gray-200 px-4 py-2">
         <div className="flex items-center gap-2 md:gap-4">
-          <h1 className="hidden text-lg font-semibold text-gray-900 sm:block">{t("title")}</h1>
+          <Link to="/" className="hidden text-lg font-semibold text-gray-900 hover:text-blue-600 sm:block">
+            {t("title")}
+          </Link>
           <ProfileSelector yjs={yjs} />
         </div>
         <div className="flex items-center gap-3">
diff --git a/e2e/journal.test.ts b/e2e/journal.test.ts
index b2863fa..ad94506 100644
--- a/e2e/journal.test.ts
+++ b/e2e/journal.test.ts
@@ -9,8 +9,9 @@ test.describe("Journal", () => {
 
   test("shows register and sign in when logged out", async ({ page }) => {
     await page.goto("/");
-    await expect(page.getByRole("link", { name: "Register" })).toBeVisible();
-    await expect(page.getByRole("link", { name: "Sign in" })).toBeVisible();
+    // Nav bar has Register and Sign In links
+    await expect(page.getByRole("navigation").getByRole("link", { name: "Register" })).toBeVisible();
+    await expect(page.getByRole("navigation").getByRole("link", { name: "Sign In" })).toBeVisible();
   });
 
   test("registration page renders correctly", async ({ page }) => {
@@ -29,6 +30,17 @@ test.describe("Journal", () => {
     await expect(page.getByText(/magic link/i)).toBeVisible();
   });
 
+  test("nav bar shows on all pages", async ({ page }) => {
+    await page.goto("/");
+    const nav = page.getByRole("navigation");
+    await expect(nav).toBeVisible();
+    // Logo/title links home
+    await expect(nav.getByRole("link", { name: "trails.cool" })).toBeVisible();
+    // Logged-out nav does not show Routes or Activities
+    await expect(nav.getByRole("link", { name: "Routes" })).not.toBeVisible();
+    await expect(nav.getByRole("link", { name: "Activities" })).not.toBeVisible();
+  });
+
   test("routes page redirects to login when not authenticated", async ({ page }) => {
     await page.goto("/routes");
     await expect(page).toHaveURL(/auth\/login/);
diff --git a/e2e/planner.test.ts b/e2e/planner.test.ts
index 67d6c97..316988b 100644
--- a/e2e/planner.test.ts
+++ b/e2e/planner.test.ts
@@ -20,7 +20,8 @@ test.describe("Planner", () => {
     const { url } = await response.json();
 
     await page.goto(url);
-    await expect(page.getByText("trails.cool Planner")).toBeVisible();
+    // Title is now a home link
+    await expect(page.getByRole("link", { name: "trails.cool Planner" })).toBeVisible();
     await expect(page.locator(".leaflet-container")).toBeVisible({ timeout: 10000 });
   });
 
diff --git a/openspec/changes/app-navigation/tasks.md b/openspec/changes/app-navigation/tasks.md
index dbbc1d7..b4eb4f2 100644
--- a/openspec/changes/app-navigation/tasks.md
+++ b/openspec/changes/app-navigation/tasks.md
@@ -1,18 +1,18 @@
 ## 1. Journal Navigation Bar
 
-- [ ] 1.1 Add nav bar to Journal root Layout — show "Routes", "Activities" links when logged in; "Login", "Register" when logged out
-- [ ] 1.2 Add user menu to nav bar — username/display name linking to profile, logout button
-- [ ] 1.3 Highlight active nav item based on current route
-- [ ] 1.4 Add i18n keys for nav labels (en + de): routes, activities, profile, logout
+- [x] 1.1 Add nav bar to Journal root Layout — show "Routes", "Activities" links when logged in; "Login", "Register" when logged out
+- [x] 1.2 Add user menu to nav bar — username/display name linking to profile, logout button
+- [x] 1.3 Highlight active nav item based on current route
+- [x] 1.4 Add i18n keys for nav labels (en + de): routes, activities, profile, logout
 
 ## 2. Planner Navigation
 
-- [ ] 2.1 Add "Start Planning" CTA button on Planner home page linking to `/new`
-- [ ] 2.2 Add home link (logo or text) to SessionView header
-- [ ] 2.3 Add i18n keys for planner nav (en + de): startPlanning, home
+- [x] 2.1 Add "Start Planning" CTA button on Planner home page linking to `/new` (already done in planner-landing-page change)
+- [x] 2.2 Add home link (logo or text) to SessionView header
+- [x] 2.3 Add i18n keys for planner nav (en + de): startPlanning, home
 
 ## 3. Verify
 
-- [ ] 3.1 Verify all Journal routes are reachable via navigation (routes, activities, profile, auth, privacy)
-- [ ] 3.2 Verify Planner home → new session → back to home works
-- [ ] 3.3 Update E2E tests if navigation changes affect existing selectors
+- [x] 3.1 Verify all Journal routes are reachable via navigation (routes, activities, profile, auth, privacy)
+- [x] 3.2 Verify Planner home → new session → back to home works
+- [x] 3.3 Update E2E tests if navigation changes affect existing selectors
diff --git a/packages/i18n/src/locales/de.ts b/packages/i18n/src/locales/de.ts
index dea861c..2fb244c 100644
--- a/packages/i18n/src/locales/de.ts
+++ b/packages/i18n/src/locales/de.ts
@@ -14,6 +14,7 @@ export default {
   planner: {
     title: "trails.cool Planer",
     subtitle: "Gemeinsame Routenplanung",
+    home: "Startseite",
     newSession: "Neue Sitzung",
     saveRoute: "Route speichern",
     exportGpx: "GPX exportieren",
@@ -65,6 +66,14 @@ export default {
   journal: {
     title: "trails.cool",
     subtitle: "Dein Outdoor-Aktivitäten-Tagebuch",
+    nav: {
+      routes: "Routen",
+      activities: "Aktivitäten",
+      login: "Anmelden",
+      register: "Registrieren",
+      profile: "Profil",
+      logout: "Abmelden",
+    },
     welcome: "Willkommen,",
     addPasskeyPrompt: "Füge einen Passkey hinzu, um dich schneller auf diesem Gerät anzumelden.",
     addPasskey: "Passkey hinzufügen",
diff --git a/packages/i18n/src/locales/en.ts b/packages/i18n/src/locales/en.ts
index 3842de0..74b3288 100644
--- a/packages/i18n/src/locales/en.ts
+++ b/packages/i18n/src/locales/en.ts
@@ -14,6 +14,7 @@ export default {
   planner: {
     title: "trails.cool Planner",
     subtitle: "Collaborative route planning",
+    home: "Home",
     newSession: "New Session",
     saveRoute: "Save Route",
     exportGpx: "Export GPX",
@@ -65,6 +66,14 @@ export default {
   journal: {
     title: "trails.cool",
     subtitle: "Your outdoor activity journal",
+    nav: {
+      routes: "Routes",
+      activities: "Activities",
+      login: "Sign In",
+      register: "Register",
+      profile: "Profile",
+      logout: "Log Out",
+    },
     welcome: "Welcome,",
     addPasskeyPrompt: "Add a passkey for faster sign-in on this device.",
     addPasskey: "Add Passkey",