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Sauna studios in O'Fallon, MO

This page lists 1 studio in O'Fallon, Missouri, checked 27 Oct 2026: HOTWORX, 2439 State Hwy K. This is the Missouri studio, not a studio in Illinois. O'Fallon is in the St. Louis metro. St. Peters and St. Charles have their own pages.

The page says this is the only infrared workout studio in O'Fallon. The page lists infrared sauna workout rooms, with virtual instructors. Isometric sessions are 30 minutes and HIIT sessions are 15 minutes, with up to 3 members in a session. It does not list a cold plunge, a float, or cryotherapy. Members have access Monday to Sunday, 24 hours. Staffed hours are Monday to Thursday 11am to 8pm, Friday 9am to 6pm, and Saturday 9am to 2pm. Sunday staffed hours are not printed. A first session is free during staffed hours. A membership dollar price is not printed.

Wooden sauna with benches
Example photo, not of a listed studio. Photo credits

How this list works: free listings are in alphabetical order and are built from each studio's own public website. Studios can pay $29/month to be Featured; Featured listings are paid placements, always labelled "Featured · paid placement (Anzeige)", and never change other listings or any Renvo Score. We don't make health claims and don't rate studios. Nothing here is medical advice.

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FAQ

How many studios are listed in O'Fallon?

One studio, checked 27 Oct 2026. A city page is indexed when it has at least 3 listings. St. Louis lists more studios.

Is this a cold plunge studio?

No. The page lists infrared sauna workout rooms. It does not name a cold plunge.

What are the hours, and what does a first visit cost?

Members have access Monday to Sunday, 24 hours. Staffed hours are Monday to Thursday 11am to 8pm, Friday 9am to 6pm, and Saturday 9am to 2pm. Sunday staffed hours are not printed. A first session is free during staffed hours. A membership dollar price is not printed.

Are these studios ranked?

No. Free listings are in A-Z order. A Featured spot is a paid placement and is labeled. None of the listings on this page is paid.

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Last updated 27 Oct 2026