In January Federer announced his intention to play on the clay this season, which will be the first time since 2016.
A combination of injury and fatigue meant the Swiss star previously took a hiatus from taking to the red dirt.
But he will make his return at next month’s Madrid Masters and then play at the French Open.
After winning the Miami Open on March 31, Federer has been resting his legs and spending time with his family.
However, today, the 37-year-old has taken to Instagram to share his first steps back on clay.
The post shows Federer smiling with his arms folded and the caption: “Clay Court Swing #timetogrind.”
And in a post on his Stories, Federer is seen smiling again with coaches Severin Luthi and Ivan Ljubicic.
Within 30 minutes, Federer’s post had already amassed over 100k likes and received plenty of support.
One fan wrote: “Welcome back champ [sic]” while another added: “Welcome back to clay @rogerfederer. Going to watch clay court swing for the first time in 3 years.”
Another wrote: “Federer on a clay court… I must be dreaming.”
And one follower said: “Roger is back on clay people.
“We have waited for this moment so long. I’ve just got a feeling that he may just spring a few surprises along the way.”
Speaking on Sunday at the Monte Carlo Masters, world No 1 Novak Djokovic welcomed Federer’s return.
“I thought tennis was missing him definitely on clay last year,” he said.
“But I think, personally, people understood why he decided as well to skip the clay-court season last year and I also understand why he wants to play.
“Definitely for our sport, it’s better that he plays. He’s been playing some great tennis. Dubai, Indian Wells, Miami, he’s won two out of three, played the final in Indian Wells, [which is] as good as it gets.
“Of course [clay is] a different surface, but in Indian Wells the ball bounces quite high there, which kind of imitates the clay. He’s dealt with high balls really well throughout his career, so I don’t see any particular big issue playing on this surface… you always expect highs from him.”