DANCING WITH THE STARS judge LEN GOODMAN has been pushed to his breaking point by his grueling Trans-Atlantic work schedule — and pals are terrified he’s teetering on the brink of a breakdown, a source says.

The 69-year-old Brit spends more than 20 hours a week jetting back and forth from London to Los Angeles, splitting his time between filming “DWTS” and the UK’s version of the show, “Strictly Come Dancing.”

A source told The ENQUIRER: “Len is on the verge of collapse. Everyone is worried about him.”

Even the dance legend admits that the commute isn’t easy.

“Sitting on the plane is boring – it’s just sitting there for 11 hours,” he told an interviewer. “It’s not hard, but it’s tiring because of the time difference. But once you say you’ll do it, you get on with it.”

Len isn’t the only one making – or complaining about – the hellish travel back and forth between the two continents. Fellow “DWTS” judge Bruno Tonioli, who’s also a judge on “Strictly Come Dancing,” has said the commute leaves both of them with “two months of permanent jet lag.”

According to a source, Len wants to quit one of the shows. And it’s looking like he’d choose to leave “DWTS,” even though his American paycheck is more than double what he earns on the other side of the pond. But Len may get the boot before he has a chance to quit. As The ENQUIRER recently reported, “DWTS” producers are said to be looking to replace the outspoken judge with someone younger and hipper because of a steady decline in ratings.

That may be a blessing in disguise, as far as Len’s friends are concerned.

“With all the travel, his time zones change dramatically every few days,” the source noted. “And when he does want to spend time off with his family, he’s too tired to enjoy it.”