Milind Soman, who was already the 'Iron Man' of India, has now been bestowed upon the title of 'Ultraman' - an honour reserved for those who survive the most difficult marathon in the world.
Milind posted pictures from his run through Florida. The 51-year-old also had his mother with him at the event.
His mother is also an avid runner, and has participated in marathons with the actor in the past.
The actor-model-fitness promoter completed the Florida Ultraman marathon over the course of three days.
The 517.5-kilometre event covers swimming, cycling and running in parts.
Four other Indians completed the marathon - Abhishek Mishra, Kaustubh Radkar, Prithviraj Patil and Manmadh Rebba.
The Florida Ultraman's first day comprised a 10-kilometre swim and a 148-kilometre bike ride. The second day saw a 276-kilometre bike ride and the final day covered an 84-kilometre run.