How old was King Abdulaziz when Riyadh was recovered?

The answer is: 26 years old.

King Abdul Aziz was twenty-eight years old when he regained Riyadh in 1319 AH, corresponding to 1902 AD. He was an example of courage, faith, wisdom, knightly virtue, and daring when he led the successful campaign. His family moved to Qatar, Bahrain and Kuwait before he was able to reclaim Riyadh. He used the resources he had to ensure the success of the campaign and was able to secure his rightful place as ruler of Riyadh. His strength and courage at such a young age made him an inspiration to many.