Greetings from — anywhere but the Big Apple.

Mayor Bill de Blasio wandered back onto the campaign trail Thursday, hitting the dusty Nevada desert after failing to make the third round of the Democratic presidential primary debate.

The mayor, who’s spurred a snide political watcher to put “MISSING” posters with Hizzoner’s face on them around the city, posted a video of himself on Instagram rambling around Red Rock Canyon in Las Vegas around noon pacific time.

“I love being here in Nevada at Red Rock National Park. Those aren’t so red,” de Blasio says with an awkward laugh, gesturing to the dung-colored mountainside behind him. “But there are some real red rocks in other parts of the park and it’s an incredible place.”

“Everyone check it out!” de Blasio says in the video, sounding more like a hospitality ambassador for the western state than the mayor of America’s greatest city.

The video drew a rebuke from a former staffer.

“It must be getting awfully hard for staff working hard in City Hall only to look up and see the mayor merrily wandering some mountainside in the middle of the day on the other side of the country,” the source steamed.

De Blasio is refusing to take a permanent vacation from the campaign trail even though he’s one of 10 candidates who did not make the Sept. 12 debate in Houston. To qualify they had to draw 130,000 donors and 2% in at least four polls.

The presidential hopefuls who will face off next month include former Vice President Joe Biden; New Jersey Sen. Cory Booker; South Bend, Indiana, Mayor Pete Buttigieg; former Housing and Urban Development Secretary Julián Castro; California Sen. Kamala Harris; Minnesota Sen. Amy Klobuchar; former Texas Rep. Beto O’Rourke; Vermont Sen. Bernie Sanders; Massachusetts Sen. Elizabeth Warren; and entrepreneur Andrew Yang.

De Blasio is still angling to make the October debate that includes the same criteria as the September affair.

“We started this campaign late, but we’re pushing hard to qualify for the debate in October,” his campaign wrote in a desperate fundraising email to supporters Thursday. He was the 24th Democrat to join the crowded field when he jumped into the race in mid-May.

After Nevada, where he attended an AFL-CIO Labor convention post-hike, de Blasio heads to Los Angeles to tape an episode of the political podcast Pod Save America, and then he’ll likely watch the Angels play his hometown favorite Boston Red Sox before finally returning to New York Saturday.

But not for long — next week he leaves the city again for the New Hampshire Democratic Convention, according to his campaign.

The term-limited pol’s insistence on forging ahead to 2020 is driving his closest supporters bonkers, a source said.

“People on the campaign and people close to him think the campaign is lunacy, but I can’t tell you for certain if someone has said to him, ‘Hey boss, time to throw in the towel, this is quixotic.'”

“I can tell you they think the whole thing is silly and they wish it was over,” the source said.