There’s a lovely walk exploring Ironbridge in the June 2023 issue of Countryfile Magazine. It may ‘only’ be 4.7 miles, but you could easily take all day, if you stop off along the route to explore the Gorge’s museums and attractions that this passes on the way, including:
The Iron Bridge, Bedlam Furnaces, Lloyds Coppice, Great Hay Incline, Coalport China Museum, Maws Craft Centre, and the Jackfield Tile Museum.
You can find the full route details on my page of the BBC Countryfile website.
Enjoy!