4 springs within 40 miles
Hot springs near Boulder
4 hot springs are within 40 miles of Boulder: the closest is Boulder Hot Springs Inn, Spa & Retreat Center (under 1 mi) and the lowest listed adult price is Boulder Hot Springs Inn, Spa & Retreat Center ($12). Distances are straight-line; driving distances in the mountains can be much longer.
- Boulder Hot Springs Inn, Spa & Retreat Center0 mi
- Pipestone Village & Hotsprings22 mi
- Broadwater Hot Springs & Fitness27 mi
- Fairmont Hot Springs Resort36 mi

Boulder Hot Springs Inn, Spa & Retreat Center
A historic inn and retreat center 3 miles from Boulder in the Elkhorn Mountain foothills, run as an alcohol-, drug- and smoke-free property. Day passes cover an outdoor pool kept at about 96-100F and indoor plunges and steam rooms, with separate women-only and co-ed sides. The indoor hot plunges are continuous-flow without harsh chemicals, while the outdoor pool uses bromine.

Pipestone Village & Hotsprings
Glamping cabins and domes near Whitehall, each with a private outdoor hot springs tub, on the site of the historic Pipestone Hot Springs. Soaking is for overnight guests only. Off-road and hiking trails surround the property, and Lewis & Clark Caverns and Butte are within a short drive.

Broadwater Hot Springs & Fitness
Helena's hot springs pool and fitness center on US 12 west of town, on a site used since 1889. A single-use pass covers five hot pools, two cool contrast pools, a sauna, a steam room and the gym, with The Springs Taproom & Grill serving poolside. The pools are lightly chlorinated as the city requires and drained and cleaned weekly.

Fairmont Hot Springs Resort
A large resort between Butte and Anaconda with 152 rooms, golf, a spa and hot springs pools fed by a 600-ft well. Pools are open only to overnight resort and condo guests and members, not day visitors. Phase 1 of a pool renovation added an adults-only tiered soaking pool, a family soaking pool, a lap pool and a cold plunge; phase 2 is under construction.