When is Windsor Great Park Illuminated? 16 July 2025 15:01 Updated Windsor Great Park Illuminated runs from Friday 14th November 20245 until Saturday 3rd January 2026. Related articles How long does it take to complete the trail? What are the opening hours? What is Windsor Great Park Illuminated? If I have booked an entry slot how long can I stay for? Are there toilets at the trail?