If you search for ‘things to do in York’ you’ll find a long list that suits everybody’s taste.
There are things to do in York City Centre such as walking the whole length of the Walls (Wall Trail – Home Page – FRIENDS OF YORK WALLS CIO) which takes just over 1 hour of walking. Please note at times of COVID-19, the walking direction is clockwise only to allow social distancing. You can enjoy a boat cruise on the river Ouse (City Cruises York | Sightseeing Cruises, Evening Cruises & Boat Hire River Ouse), with a variety of options at day or night time.
Just outside York City Centre there are various places for different activities. Near Kitchener Street there is the Heworth Golf Club (Golf Club York | Heworth golf club york | York) and is open 7 days a week. Other activities in green areas in York are fishing at the Redwood Park Fishery (Redwood Park: Fishing Lakes Near York. Yorkshire Fishing Lakes. (redwoodpark-york.co.uk)