Exhibit 23.1

KPMG LLP

Two Financial Center

60 South Street

Boston, MA 02111

Consent of Independent Registered Public Accounting Firm

We consent to the use of our report dated February 25, 2025, with respect to the consolidated financial statements of Planet Fitness, Inc., and the effectiveness of internal control over financial reporting, incorporated herein by reference.

/s/ KPMG LLP

Boston, Massachusetts

May 6, 2025