The Boss is taking some time off.

After touring steadily for months, Bruce Springsteen has canceled two tour dates in Philadelphia, citing an unnamed illness as the reason.

A message shared to his profile on X read, "Due to Bruce Springsteen having been taken ill, his concerts with The E Street Band at Citizens Bank Park in Philadelphia on August 16 and 18 have been postponed."

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A photo of Bruce Springsteen performing

Bruce Springsteen appears onstage at Volkspark Stadium in Hamburg, Germany, on July 15, 2023. (Georg Wendt/picture alliance via Getty Images)

"We are working on rescheduling the dates so please hold on to your tickets as they will be valid for the rescheduled shows."

The post was made just after 2 p.m. Wednesday, hours before the show's start time of 7:30. Fans had already begun preparing for the concert, and some had traveled considerable distances to attend.

Several people shared that they had flown to Philadelphia from across the country, and a few had even traveled internationally.

Bruce Springsteen

Bruce Springsteen fans expressed their disappointment over the canceled concert. (AP Photo/Chris O'Meara, File)

"Flew all the way from Sweden to see this concert," one person posted along with a selfie from an airport.

"Sorry to hear about Bruce being ill, that sux!" another wrote. "But when and how are refund details going to be available? I am in town from London (UK) and have 6 tix to Friday's Bruce show, how do I get my $2K+ back?"

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As of now, there are no further updates. Rescheduled dates have not been shared, and Springsteen and his team have not revealed what is ailing him.

His next shows are scheduled for Aug. 24 and 26 in Foxborough, Massachusetts. No announcements have been made regarding whether these concerts will continue as planned.

A photo of Bruce Springsteen

Bruce Springsteen has been touring steadily since Feb. 1. (Mike Coppola/Getty Images for The Bob Woodruff Foundation)

Springsteen's team did not immediately respond to Fox News Digital's request for comment.

The rock star has been touring steadily since Feb. 1 of this year. He kicked things off in Tampa, Florida, then took the show to Europe before heading back to the U.S. He has not taken any significant breaks, although he was forced to postpone a handful of shows in March, also due to illness.

Concerts were canceled in Albany, New York; Columbus, Ohio; and Uncasville, Connecticut, and when that announcement was made, he similarly did not share many details.

A photo of Bruce Springsteen

Bruce Springsteen speaks onstage during the 37th Annual Rock & Roll Hall of Fame Induction Ceremony at Microsoft Theater in Los Angeles on Nov. 5, 2022. (Amy Sussman/WireImage)

It merely said, "Due to illness, Bruce Springsteen and The E Street Band’s concert at MVP Arena in Albany on Tuesday, March 14 has been postponed. We are working on rescheduling the date so please hold on to your tickets as they will be valid for the rescheduled show."

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E Street Band member Steven Van Zandt posted an encouraging message about those concert postponements, saying, "No need to be anxious or afraid. Nothing serious. Just a temporary situation. We will all be back in full force very soon."

Bruce Springsteen performs

Bruce Springsteen is set to tour until December. (Todd Owyoung/NBC via Getty Images)

Then in April, Springsteen and his wife got COVID — this happened during the short break between the first U.S. leg of the tour and their travel to Europe for those shows, so nothing had to be rescheduled.

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After next week's shows in Massachusetts, the tour is set to continue with several more stops on the East Coast, followed by a stint in Canada, before ending with a series of dates in Arizona and California. The final concert is slated for Dec. 10 in San Francisco.