Freddy Head expressed himself as "very happy" after Solow came through a racecourse gallop at Maisons-Laffitte on Monday afternoon.
The brilliant miler remains on course for the Queen Elizabeth II Stakes at Ascot on Champions Day, 17 October.
Since his spectacular display at Meydan in March he has won the Prix d'Ispahan at Longchamp, the Queen Anne at Royal Ascot and the Sussex Stakes at Goodwood.
As a five-year-old gelding, Head has purposefully not over-raced him this season with the intention being he stays on the go for a few more years yet.
"The horse is very well," said Head.
"Maxime Guyon was very pleased with him and said his action felt good and all is well.
"It was a strong piece of work with two companions, they went a good pace.
"The ground would have been good to soft and he appears to have kept his form really well, despite being on the go since March.
"I couldn't be happier with him, I just hope there is a little bit of soft in the ground at Ascot and to be fair there usually is in October."
