Sauna City Guide

PORTAL Thermaculture Boulder

Boulder, Denver

Traditional saunaContrast therapyCold plunge

A North Boulder contrast-therapy club in the Emerald City building with two wood-burning saunas and two ice-cold plunges, run by the same company as PORTAL in Denver.

More about PORTAL Thermaculture Boulder

The routine is the same as at the other PORTAL clubs: about 15 minutes in a wood-fired sauna, a few minutes in a cold plunge, three rounds in total. Visits are paid with credits or a membership and booked online.

Bring a swimsuit or clothes that can get wet. Towels can be rented, and drinking water is free. Members can also use the Denver club on Federal Boulevard, depending on their plan.

At a glance

PORTAL Thermaculture Boulder has a wood-fired sauna, plus a cold plunge tub and a cold plunge tub. A session costs $65. Swimsuit required and booking required.

Sauna
Wood-fired
Cold plunge
Yes
Session
$65

Sauna

  • Wood-firedTemp not listed

Cold plunge

  • Cold plunge tubTemp not listed
  • Cold plunge tubTemp not listed

Before you go

Swimsuit
Required
Booking
Required
Towels
Bring or rent

One credit per visit; credits expire after 180 days. Prices checked October 2026.

Getting there

4949 Broadway, #113, Boulder, CO, 80304

Frequently asked questions

How much does PORTAL Thermaculture Boulder cost?

A session at PORTAL Thermaculture Boulder costs $65 (checked October 2026).

What kind of sauna does PORTAL Thermaculture Boulder have?

PORTAL Thermaculture Boulder has a wood-fired.

Does PORTAL Thermaculture Boulder have a cold plunge?

Yes. PORTAL Thermaculture Boulder has a cold plunge tub and a cold plunge tub.

Do you need a swimsuit at PORTAL Thermaculture Boulder?

Yes, swimsuits are required at PORTAL Thermaculture Boulder.

Do you need to book PORTAL Thermaculture Boulder in advance?

Yes, PORTAL Thermaculture Boulder requires a booking.

Sources

We last confirmed PORTAL Thermaculture Boulder is open in October 2026. Spotted something out of date?