PORTAL° Thermaculture Opens First Montana Location in Bozeman Northside, March 16

PORTAL° Thermaculture is debuting its first Montana club at 660 N Ida Ave in Bozeman northside, bringing two traditional saunas, five individual cold plunge tubs, an outdoor plunge courtyard, a rooftop deck and indoor clubhouse and lounge areas to the neighborhood. The company positions the site as an outdoor club and says, "PORTAL° Bozeman is our newest outdoor club featuring an aesthetic blend of sauna and cold plunge contrast therapy offering a place to chill, sweat, and connect."

The physical site pairs a revamped warehouse and a new build: locker rooms, changing spaces and social areas occupy the renovated warehouse, while saunas, cold plunges and the check-in area sit in a newly constructed structure next door. The rooftop deck is part of the package and is described as a spot for relaxing and socializing with some surprisingly good views of the surrounding area, and the location sits one block east of Wild Crumb and Treeline Coffee, making it an easy stop after skiing at Bridger Bowl, river days or rides in the Bangtails.

The club’s official public opening date is March 16, 2026, though the facility was already open to members who have started using the space during a members-only soft opening. PORTAL° launched its first location in Boulder and has expanded to cities including Denver and Minneapolis; the Bozeman opening marks the brand’s first Montana location and is presented as an outdoor, recovery-oriented club for contrast therapy and communal wellness.

PORTAL° lays out a clear session ritual and guest guidance: "Guests generally alternate between heat exposure (sauna) and cold exposure (cold plunge) three times per session, spending 15 minutes in the heat and 3 minutes in the cold. We ask that guests are respectful of their booking window to allow others to enjoy the club." The company also states, "We have towels available to add-on to your session and we recommend wearing or bringing either a swimsuit or clothing that can get wet," and members can redeem sessions, classes and events through the club’s booking system.

Membership is emphasized as the primary access path: "MEMBERSHIP — Membership is the ultimate way to experience sauna cold plunge contrast therapy and be part of the PORTAL° community. Members get daily access to sessions and classes. Please note that memberships are non-refundable and non-transferrable." Published pricing shows monthly tiers of "$99 | 4 CREDITS / MONTH", "$129 | BOZEMAN UNLIMITED", "$179 | ALL CLUB UNLIMITED"; three month options "$300 | BOZEMAN UNLIMITED", "$430 | ALL CLUB UNLIMITED"; and annual options "$1100 | 4 CREDITS / MONTH", "$1400 | BOZEMAN UNLIMITED", "$1800 | ALL CLUB UNLIMITED."

The credits system is presented separately: "Redeem credits to book sessions, classes and events at PORTAL°", "1 SESSION = 1 CREDIT", and "Credits are transferable to share with other members, never expire, and can be used at any PORTAL° club. Please note that credits are non-refundable." The company’s credit price lines appear as "$45", "ONE CREDIT", and "$120 SAVE $60" in its pricing materials, with the $120 line shown without an explicit unit count in the provided materials.

PORTAL° Bozeman opens March 16 at 660 N Ida Ave with a mix of sauna rooms, five individual plunge tubs, rinse stations and social lounges designed around heat, cold and community; members are already using the space and the club arrives positioned as a dedicated post-activity recovery and social hub for the Northside.