Orfevre, last year's Japanese Triple Crown winner, faces a challenge from the outside barrier. No horse drawn 10 or higher has won the Arc since Dalakhani scored from No. 15 in 2002.
Camelot, the near-winner of this year's British Triple Crown, was the best-drawn of the favorites, getting stall No. 5 with Frankie Dettori set to ride.
Among the other short-odds runners, Breeders' Cup Turf champion and Coronation Cup winner St Nicholas Abbey got post 10. Yorkshire Oaks and Prix Vermille winner Shareta will break from No. 11. Hardwicke Stakes winner Sea Moon is No. 16 and Masterstroke, winner of the Prix de Deauvile, is in gate 17. Meandre, runner-up to Orfevre in the Prix Foy, drew gate No. 13.
Unlike American custom, starting gate assignments do not correspond to program and betting numbers -- important to remember as the Arc and surrounding races will be available for wagering through some U.S. outlets.
Defending champion Danedream and well-fancied British contender Nathaniel will both miss the Arc, Danedream quarantined because a case of swamp fever in another horse at her training center and Nathaniel with a fever and abnormal blood work.
The going at Longchamp on Sunday is expected to be soft after midweek rains, with more showers forecast Saturday and fine weather in the offing for race day in the Bois du Boulogne.