Frankel warmed up for the final race of his career with a workout at Newmarket before racing on Saturday.
Henry Cecil's superstar, officially the best racehorse in the world, is due to end his glittering career in the Qipco Champion Stakes at Ascot on 20 October.
Connections decided to recreate race conditions by parading him in the paddock, while jockey Tom Queally was wearing owner Khalid Abdullah's silks.
Frankel then galloped over one mile and a furlong alongside stable companions Specific Gravity and his half-brother Bullet Train.
Cecil said: "He's had a nice blow, but he wanted to because it's not D-Day.
"He didn't run in the Moulin because I didn't think it would achieve anything and this was a better idea."
When asked if Ascot but would be his final start, he said: "I would think so, but the Prince will make that decision."
Queally said: "He felt fine, that's exactly what we were looking for as there's still a bit (of time) to go. He had a nice blow - that was exactly what we wanted."
Frankel's popularity has reached such heights there were barely any vantage points left in the paddock before the exercise.
Once under way, Bullet Train set off at a generous pace, not much slower than they would have gone in a real race.
Specific Gravity was in behind the pacesetter, while Queally settled Frankel perfectly in behind.
Frankel then eased past Specific Gravity, who dropped away, at the half-way stage.
Soon the mighty horse was alongside his sibling before gliding clear under minimal pressure.
As Frankel went past the winning post, the big crowd assembled gave him a generous round of applause.
Abdullah's racing manager Teddy Grimthorpe said: "It's amazing how many people came to see him.
"He's done something today to keep him up to speed and he's achieved it with the minimum of fuss.
"It was slightly less than a race as they didn't go a furious gallop but they still went a decent pace and it was a bit more of a workout.
"It was kind of Newmarket to allow us to come and Frankel has enjoyed himself."
Cecil has been struggling with ill health in recent months and has been a rare visitor to racecourses this season, but he said: "I am doing fine but I am getting tired and I need a good holiday."