diff --git a/client/src/components/Planner/DayPlanSidebar.tsx b/client/src/components/Planner/DayPlanSidebar.tsx
index 0072eb7d..8c168915 100644
--- a/client/src/components/Planner/DayPlanSidebar.tsx
+++ b/client/src/components/Planner/DayPlanSidebar.tsx
@@ -5,7 +5,7 @@ declare global { interface Window { __dragData: DragDataPayload | null } }
 import React, { useState, useEffect, useLayoutEffect, useRef, useMemo } from 'react'
 import { ChevronDown, ChevronRight, ChevronUp, Navigation, RotateCcw, ExternalLink, Clock, Pencil, GripVertical, Ticket, Plus, FileText, Trash2, Car, Lock, Hotel, Footprints, Route as RouteIcon } from 'lucide-react'
 import { assignmentsApi, reservationsApi } from '../../api/client'
-import { calculateRoute, calculateRouteWithLegs, optimizeRoute } from '../Map/RouteCalculator'
+import { calculateRoute, calculateRouteWithLegs, optimizeRoute, generateGoogleMapsUrl } from '../Map/RouteCalculator'
 import PlaceAvatar from '../shared/PlaceAvatar'
 import ConfirmDialog from '../shared/ConfirmDialog'
 import { useContextMenu, ContextMenu } from '../shared/ContextMenu'
@@ -2168,6 +2168,28 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar(props: DayPlanSidebarP
                           <RouteIcon size={12} strokeWidth={2} />
                           {t('dayplan.route')}
                         </button>
+                        {/* Open the day's stops as a route in Google Maps (planned order). #1255 */}
+                        <button
+                          onClick={() => {
+                            const url = generateGoogleMapsUrl(getDayAssignments(day.id).map(a => a.place).filter(p => p?.lat != null && p?.lng != null) as { lat: number; lng: number }[])
+                            if (url) window.open(url, '_blank', 'noopener,noreferrer')
+                          }}
+                          aria-label={t('planner.openGoogleMaps')}
+                          title={t('planner.openGoogleMaps')}
+                          className="bg-transparent text-content-secondary"
+                          style={{
+                            display: 'flex', alignItems: 'center', justifyContent: 'center',
+                            padding: '6px 10px', borderRadius: 8, border: '1px solid var(--border-faint)',
+                            cursor: 'pointer', fontFamily: 'inherit', flexShrink: 0,
+                          }}
+                        >
+                          <svg width="14" height="14" viewBox="0 0 48 48" fill="currentColor" aria-hidden="true">
+                            <path d="M24 9.5c3.54 0 6.71 1.22 9.21 3.6l6.85-6.85C35.9 2.38 30.47 0 24 0 14.62 0 6.51 5.38 2.56 13.22l7.98 6.19C12.43 13.72 17.74 9.5 24 9.5z" />
+                            <path d="M46.98 24.55c0-1.57-.15-3.09-.38-4.55H24v9.02h12.94c-.58 2.96-2.26 5.48-4.78 7.18l7.73 6c4.51-4.18 7.09-10.36 7.09-17.65z" />
+                            <path d="M10.53 28.59c-.48-1.45-.76-2.99-.76-4.59s.27-3.14.76-4.59l-7.98-6.19C.92 16.46 0 20.12 0 24c0 3.88.92 7.54 2.56 10.78l7.97-6.19z" />
+                            <path d="M24 48c6.48 0 11.93-2.13 15.89-5.81l-7.73-6c-2.15 1.45-4.92 2.3-8.16 2.3-6.26 0-11.57-4.22-13.47-9.91l-7.98 6.19C6.51 42.62 14.62 48 24 48z" />
+                          </svg>
+                        </button>
                         <button onClick={() => handleOptimize(day.id)} className="bg-surface-hover text-content-secondary" style={{
                           flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 5,
                           padding: '6px 0', fontSize: 11, fontWeight: 500, borderRadius: 8, border: 'none',