Windsor Great Park covers 4,800 acres, parts of which are open to the public.
The park today is the perfect place for picnics, dog- walking, cycling and horse riding.
Accessible from Windsor town centre on foot via the Long Walk, or car parks are located along the A332 that goes through the Park. Alternatively you can drive to Virginia Water and park at Blacknest Gate for a walk around the lake, where you will pass a totem pole and miniature waterfall.
Dogs MUST be kept on a lead in the Valley Gardens and the deer park but apart from that dogs are allowed to run around as they please.
Free entry to all areas of Windsor Great Park, except for the Savill Garden. Free car parking areas on the A332. Chargeable parking at gates around the Great Park. Open year round from 7am to dusk.
Visited here in June 2017 with our dog. We actually parked and had lunch at the union inn in Old Windsor (which was delightful and the landlady was very dog friendly). We then walked back from the pub (they will give you directions) and entered the park through a quiet lane near a church yard. It was a lot quieter than normal walk with more fields which was nicer for the dog. There are deer so you need to keep an eye out. We walked about a mile over the fields to get to the official walk/path. There was also a couple of ponds to watch out for. The official path is about 3 miles long and runs from the castle to a horse monuments. The views are spectacular.