Skip to main content

MAC

Classes – Les Mills

At Montana Athletic Club, we’re redefining fitness. From personalized programs to group classes and expert support, we balance challenges with care to ensure your success every step of the way.

The MAC is Now Featuring

Les Mills The Trip!

This fun and exciting spin class is outstanding! We have several classes scheduled during the week, or you can just start a class anytime you want when the studio is available using Fitness on Demand!!!

30 Minute High Intensity Interval Training

Les Mills Sprint

It’s a short, intense style of training where the thrill and motivation comes from pushing your physical and mental limits. A high intensity, low impact workout, it’s scientifically proven to return rapid results.

The 30 minutes you put into a LES MILLS SPRINT workout drives your body to burn calories for hours. You combine bursts of intensity, where you work as hard as possible, with periods of rest that prepare you for the next effort. The payoff? You smash your fitness goals, fast.

Bodypump Is a Barbell Workout

Les Mills Bodypump

Using light to moderate weights with lots of repetition, BODYPUMP gives you a total body workout. It will burn up to 540 calories*. Instructors will coach you through the scientifically proven moves and techniques pumping out encouragement, motivation and great music – helping you achieve much more than on your own! You’ll leave the class feeling challenged and motivated, ready to come back for more. BODYPUMP is available as either a 55, 45 or 30-minute workout.

High Intensity Interval Training 

Les Mills Grit

This workout uses barbell, weight plate and body weight exercises to blast all major muscle groups. LES MILLS GRIT Strength takes cutting edge HIIT and combines it with powerful music and inspirational coaches who will be down on the floor with you, motivating you to go harder to get fit, fast.

The 30 minutes you put into a LES MILLS SPRINT workout drives your body to burn calories for hours. You combine bursts of intensity, where you work as hard as possible, with periods of rest that prepare you for the next effort. The payoff? You smash your fitness goals, fast.

Our Services

Services & Programs

Full-Service Fitness Facility

Access top-tier equipment, expert trainers, and diverse classes under one roof.

Personalized Training Programs

Work with world-class trainers to create custom plans tailored to your goals.

Community-Driven Wellness

Join a vibrant community with over 2,500 members and a legacy of growth since 1991.

Full-Service Fitness Facility

Access top-tier equipment, expert trainers, and diverse classes under one roof.

Personalized Training Programs

Work with world-class trainers to create custom plans tailored to your goals.

Community-Driven Wellness

Join a vibrant community with over 2,500 members and a legacy of growth since 1991.

Discounted Guest Pass

Trying It All For Yourself

InBody

Find Out What You’re Made Of

Try A New Class

See Our Class Schedule

MyZone

#EffortRewarded

The Montana Athletic Club was built as a partnership between Doug Mahlum and Jack Tawney in 1991 at 17,000 SF and had 600 members. Today, the MAC is at 32,000 SF with 3,000 members. We are a full-service facility with world-class trainers and instructors.

© 2026 Montana Athletic Club | Bigfork MT | (406) 837-2582.