Qatar Prix Marcel Boussac previews lead up to Prix de l’Arc de Triomphe
The Guardian Sport • 1 min read • Latest: Oct 4, 2026, 11:01 AM
Last updated Oct 4, 2026

The Prix de l’Arc de Triomphe is set for 3:05 PM today at Longchamp in Paris. The Qatar Prix Marcel Boussac is anticipated to showcase a dozen runners, including key contenders. Last year's winner was Diamond Necklace, and home stables have seen a mix of success historically, claiming 10 of the last 20 editions. Aidan O’Brien has been particularly successful, winning six times since 2005, while Joseph O’Brien has the likely favorite in Green Empress, recently a runner-up in the Moyglare Stud Stakes.
- •Prix de l’Arc de Triomphe starts at 3:05 PM today in Paris.
- •Qatar Prix Marcel Boussac features twelve juvenile fillies.
- •Home teams have 10 wins in the last 20 years of the Boussac.
- •Aidan O’Brien has six wins in the Arc since 2005.
- •Joseph O’Brien's Green Empress is a top contender.
- 11:01 AMThe Guardian Sport — Prix de l’Arc de Triomphe 2026: Longchamp horse racing updates – live
"Updates on the big race in Paris (3.05pm), news and more Get in touch! Send your thoughts to Greg here 12.31pm Qatar Prix Marcel Boussac preview A dozen runners for the Arc meeting’s premier event for juvenile fillies, won last year by an Arc contender, Diamond Necklace. It’s a race where the visitors have enjoyed plenty of success in recent years but the home team have also managed to hold their own, with 10 wins for French stables in the last 20 years and the remainder shared between Ireland and Britain. Aidan O’Brien, needless to say, is the most successful raider from across the water, with six wins since 2005, but it is his son, Joseph, who fields the likely favourite in Green Empress, the runner-up behind his dad’s hugely impressive Sun Goddess in the Moyglare Stud Stakes last time. Continue reading...
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