The international equestrian community is in deep mourning following the passing of Mariett, the legendary Danish Warmblood mare whose miraculous resilience and competitive brilliance carried Olympian Lars Petersen to the absolute pinnacle of global dressage. Mariett passed away peacefully in Wellington, Florida, bringing an end to an extraordinary life that inspired riders and horse lovers across the world.
Quick Facts: The Legacy of Mariett
- Foaled: 1998 (Denmark)
- Breeding: Danish Warmblood by Come Back II out of Zendi (Sidney)
- Rider: Lars Petersen (Olympian, Denmark/USA)
- Owner: Marcia Pepper
- Major Highlights: 2014 FEI World Equestrian Games (Normandy), 2014 & 2015 FEI World Cup Dressage Finals, 2012 USEF Dressage Horse of the Year
- Claim to Fame: The famous “Miracle Mare” who survived a near-fatal hoof injury to conquer the world stage
The Miracle Comeback That Redefined a Career
To understand the profound impact of Mariett Lars Petersen made on international equestrian sport, one must look back to her darkest hour. Foaled in 1998 and bred by Gunnar Mousten in Denmark, the talented bay mare was brought to the United States after being scouted as a formidable Grand Prix prospect.
In 2008, tragedy struck when Mariett tore off a substantial portion of her hoof in a harrowing stable accident. Leading veterinary specialists initially feared she would have to be euthanized. When she survived, experts unanimously declared that she would never walk soundly again, let alone dance in the dressage arena.
Owner Marcia Pepper and Lars Petersen refused to give up. Through two years of patient rehabilitation, meticulous veterinary care, and unmatched horsemanship, Mariett beat all odds. Not only did she regain full soundness, but she returned to international competition with more fire, rhythm, and expressive power than ever before.
Glory on the Global Stage: WEG and World Cup Feats
By 2012, Mariett’s comeback transitioned from an inspiring story into athletic dominance. Dominating the competitive circuit at the Adequan Global Dressage Festival in Wellington, she captured prestigious Grand Prix victories and took home the coveted USEF Dressage Horse of the Year award.
In 2014, Mariett earned Petersen a place on the Danish national team for the Alltech FEI World Equestrian Games in Caen, Normandy. Under the roaring applause of tens of thousands, the mare displayed world-class passage and piaffe, cementing her reputation among the world’s elite dressage performers.
The duo followed up their championship campaign by qualifying for and shining at consecutive FEI World Cup Dressage Finals in Lyon, France (2014) and Las Vegas, Nevada (2015). Her signature freestyle routines, packed with emotional music and technical difficulty, regularly brought spectators to their feet.
A Peaceful Retirement in Wellington
Mariett officially retired from competitive sport in 2016 at the age of 18, enjoying a decade of serene leisure in the lush paddocks of south Florida under the devoted care of Pepper and Petersen’s team.
Tributes have poured in from fellow Olympians, trainers, and dressage enthusiasts worldwide. Remembered for her regal presence, fierce competitive spirit, and unforgettable triumph over adversity, Mariett leaves behind a timeless legacy as one of the greatest comeback horses in modern equestrian history.

