diff --git a/tests/ui/maps.spec.js b/tests/ui/maps.spec.js
index 638b5f9..48491a5 100644
--- a/tests/ui/maps.spec.js
+++ b/tests/ui/maps.spec.js
@@ -42,3 +42,39 @@ test('M4: Home page map renders MapLibre GL canvas without JS errors', async ({
     await expect(page.locator('#home-map canvas.maplibregl-canvas')).toBeVisible({ timeout: 10000 });
     expect(errors, 'No JS errors on home page').toHaveLength(0);
 });
+
+// ── M5: Italy map — no JS errors with GPX present ────────────────────────────
+test('M5: Italy map page renders without JS errors (GPX present)', async ({ page }) => {
+    const errors = [];
+    page.on('pageerror', e => errors.push(e.message));
+
+    await page.goto('/trips/italy-2025/map');
+    await expect(page.locator('canvas.maplibregl-canvas')).toBeVisible({ timeout: 10000 });
+    // Wait for markers to confirm map.on('load') completed
+    await expect(page.locator('.maplibregl-marker').first()).toBeVisible({ timeout: 15000 });
+    // Give Promise.all time to resolve
+    await page.waitForTimeout(3000);
+
+    expect(errors, 'No JS errors on Italy map page').toHaveLength(0);
+});
+
+// ── M6: Italy map — journey source exists after GPX loads ────────────────────
+test('M6: Italy map has a journey MapLibre source after GPX settles', async ({ page }) => {
+    await page.goto('/trips/italy-2025/map');
+    await expect(page.locator('canvas.maplibregl-canvas')).toBeVisible({ timeout: 10000 });
+    await expect(page.locator('.maplibregl-marker').first()).toBeVisible({ timeout: 15000 });
+
+    // Wait until the journey source appears — addJourneySegments runs inside Promise.all.then()
+    // `var map = ...` in map.html.twig is a plain <script> var → available as window.map.
+    await page.waitForFunction(function () {
+        return window.map &&
+               (window.map.getSource('journey') !== undefined ||
+                window.map.getSource('journey-0') !== undefined);
+    }, { timeout: 15000 });
+
+    const hasSource = await page.evaluate(function () {
+        return !!(window.map.getSource('journey') || window.map.getSource('journey-0'));
+    });
+
+    expect(hasSource).toBe(true);
+});