Deep Impact came through his Prix de l'Arc de Trimphe workout at Longchamp with flying colors on Wednesday as he covered the final quarter-mile of the 1 1/2-mile move in an unofficial 21 seconds flat under regular rider Yutaka Take.
A 4-year-old Japanese-bred son of Sunday Silence, Deep Impact was working in lieu of a run in last Sunday's Arc prep for older horses, the Prix Foy, in which his main rivals for the Arc, Shirocco and Hurricane Run, finished first and second.