PARIS — Aboard a bright yellow bike that matched his shiny leader’s jersey, Chris Froome of Britain rode the largely ceremonial final stage of the Tour de France on Sunday to secure his fourth and most challenging Tour title.

“I want to dedicate this victory to my family,” he said. “Your love and support makes everything possible. I also want to thank my team, Sky.”

Froome, 32, finished 54 seconds ahead of Rigoberto Urán of Colombia in the overall race. It was Froome’s smallest margin of victory in his four Tour titles. The narrowest in Tour history was Greg LeMond’s victory in 1989, when he beat Laurent Fignon by eight seconds.

This was the third straight title for Froome. His first came in 2013, a year after another Team Sky rider, Bradley Wiggins, began a brief era of British dominance.