It seems like you could spend a full day at this Palace. But is 4 hours enough? Thanks!
Yup, 4 is enough. That is essentially the time I spent.
More than enough. If you have the time, visit Churchill’s grave. It’s about a mile away at St. Martin’s church in Bladon.
Spend half a day in Oxford which is 8 miles away: visit the Ashmolean Museum...it has lots of keen Roman Artifacts and a real Dodo. Tour some of the Oxford Colleges. PS. We spent the night in a B & B in Bladon; we just walked to visit Winston & Clementine after breakfast.
You can easily spend a full day at Blenheim Palace, especially if you include the Downstairs tour. The grounds are extensive and impressive too. But if time is at a premium, it can be 'done' in four hours.
It is pretty easy to spend a full day there if you include the extensive grounds, but 4 hours would work if you prioritize what you want to see. Check to see if they are offering any of the special tours on the day of your visit. I took a garden tour and the ”downstairs” tour and enjoyed them more than the house itself.