LOUISVILLE, Ky. – More than a half-dozen horses who contested last year’s Kentucky Derby or Oaks are back to compete at Churchill Downs this Derby week. The first to pop up is Honor Marie in Wednesday’s $200,000 Isaac Murphy Marathon. And while the question for many heading into the Derby is if they can go the 1 1/4 miles, trainer Whit Beckman wanted to go even longer with his charge. He finally gets the chance in this 1 1/2-mile race.