City Guide · October 2026
St. Louis runs on contrast: of our 17 verified listings, 7 are tagged for cold plunge — infrared studios with plunge pairings, a strength gym with a dedicated ice bath, a personal-training gym with a recovery room, and a holistic day spa folding plunge into a salt-and-red-light menu. These are the standouts from the full St. Louis directory. Looking for heat? Our companion guide to the best saunas in St. Louis covers the cedar saunas, steam rooms, and infrared studios.
Maryland Heights
The suburban FLOAT STL location in Maryland Heights pairs infrared sauna with cold plunge and contrast therapy sessions alongside float therapy. Cold plunge sessions start at $20; an unlimited contrast therapy membership runs $325/mo. Same pricing as its Midtown sibling — pick whichever side of the metro you're on.
Brentwood
A strength-training gym in Brentwood with a dedicated cold plunge for post-workout muscle recovery — described on its official site, with no spa trappings. The best pick if you want to lift, then plunge, without joining a wellness club. Pricing isn't published, so check with the venue.
A personal-training gym in West County whose official site advertises a recovery room with infrared sauna and cold plunge for circulation, inflammation, and soreness — plus massage therapy on site. The rare gym where the recovery room is a stated feature, not an afterthought. Pricing isn't published, so check with the venue.
Ellisville
A holistic day spa in Ellisville pairing infrared sauna sessions with cold plunge — plus a halotherapy salt room, red light therapy, NormaTec compression, an oxygen bar, and ionic foot detox. The most modalities under one roof in our St. Louis cold-plunge data. Pricing isn't published, so check with the venue.
Midtown
Serving St. Louis since 2015, the Midtown FLOAT STL studio pairs infrared sauna heat with cold plunge immersion for contrast therapy, plus float therapy and massage. Cold plunge sessions from $20; unlimited contrast $325/mo. The veteran of the city's contrast scene — also featured in our sauna guide.
Stretch U – Central West End offers an intro recovery session — cold plunge, contrast, red light, and sauna — for $20, two blocks from BJC Medical Center. And Ready Fitness Training is a 24/7 gym on S Kingshighway with an ice bath and sauna included in memberships from $65/mo (also featured in our sauna guide).
Start short. Most first-timers do one to three minutes — the tubs are cold enough that you don't need to prove anything. Breathe slowly through your nose and get out before you start shivering hard.
What to bring. Swimwear for shared plunge tubs and flip-flops for the walk-over. Studios typically supply towels; gyms may not.
Who should skip. If you're pregnant or have a heart condition or blood-pressure issues, check with a doctor before plunging. Everyone else: hydrate and don't plunge alone if you're new to it.
FLOAT STL lists cold plunge sessions from $20 at both its Midtown and Maryland Heights locations, with unlimited contrast therapy at $325/mo; Stretch U's intro recovery session (plunge, contrast, red light, sauna) is $20. Most other venues don't publish pricing — check with the venue.
All 7 cold-plunge-tagged venues pair plunge with sauna heat: both FLOAT STL locations, Tempo Fitness, Salty Spa, Stretch U, and Ready Fitness Training are all tagged for contrast as well as plunge.
Yes — St. Louis Strength Academy has a dedicated cold plunge in a strength-training gym, and Ready Fitness Training's memberships (from $65/mo) include ice bath and sauna access in a 24/7 gym. Both skip the spa-day framing entirely.
Mostly infrared: FLOAT STL, Tempo Fitness, Stretch U, and Salty Spa all pair their plunges with infrared sauna. Ready Fitness Training is the exception — its ice bath is paired with a traditional sauna.
These picks are drawn from Sauna Scout's verified directory — 7 St. Louis listings tagged for cold plunge — every venue was checked against its official website and an active map listing before publication. Picks reflect our researchers' read of the data, not paid placement. Read more about how we verify in The State of Saunas in America 2026.