Erddig is owned by the National Trust, to whom it was bequeathed by the last Squire, Philip Yorke. The Yorke family maintained a fascinating collection of portraits and photographs of people who worked on the estate. Outside there is a formal garden and landscaped park.
It is possible to do a short ride completely within the grounds. However, the ride can easily be extended along the quiet country lanes surrounding Erddig. You can hire cycles, including tandems, for very reasonable rates. The last time we went we hired a tandem for two of our children, which they really enjoyed riding. The cycle hire shop is within the property itself, so if you are not a National Trust member, you will have to pay to access the shop. However, you could also take the opportunity to look round the house and formal gardens. The park land surrounding the formal gardens is freely accessible, so if you bring your own bikes you can do the rides without paying to enter the house.
The hire shop has a leaflet which shows a couple of rides of about 3 miles through the grounds and along the local lanes. We did both these one after the other on a sunny day.