# HIIT gyms in Colorado > You need a high-intensity interval training session that pushes your limits without compromise. If the heart rate doesn't spike, the workout didn't happen. Source: https://www.atly.com/united-states/colorado/best-gyms-hiit ## Places (16) ### 1. Base6 Fitness Fitness center offers scalable HIIT workouts with thoughtful, varied classes that change daily. Atmosphere is welcoming and supportive, fostering a strong sense of community and encouragement among members of all skill levels. - Address: 3805 E Colfax Ave, Denver, CO 80206, USA - Atly: https://www.atly.com/location/Base6Fitness ### 2. Traverse Fitness Gym offers a high-energy atmosphere with a strong sense of community and camaraderie that makes workouts feel like shared victories. Facilities include sauna, cold plunge, and coworking space, creating a human optimization hub beyond typical fitness centers. - Address: 2449 S Broadway, Denver, CO 80210, USA - Atly: https://www.atly.com/location/TraverseFitness ### 3. BFT Highlands Ranch Fitness center offers a supportive atmosphere where workouts adjust to all levels without judgment. Coaches bring positive energy and play motivating music that enhances the experience. The space combines science-based programming with a mix of strength and cardio exercises for a well-rounded workout. - Address: 9370 S Colorado Blvd Unit A-14, Highlands Ranch, CO 80126, USA - Atly: https://www.atly.com/location/BFTHighlandsRanch ### 4. Duality Fitness center combines inclusive community with colorful lighting and lively music to create an uplifting atmosphere. Classes offer diverse, challenging workouts supported by encouraging participants. Puppies often appear in the lobby, adding a unique, welcoming touch. - Address: 4635 W Colfax Ave, Denver, CO 80204, USA - Atly: https://www.atly.com/location/Duality ### 5. Fit Collective Denver Fitness center offers a modern, clean space with sunrise views and a supportive, inclusive community. Group classes vary widely, catering to different fitness levels with thoughtful, accessible workouts. The atmosphere feels warm and welcoming, fostering camaraderie and motivation. - Address: 3857 Steele St #1182, Denver, CO 80205, USA - Atly: https://www.atly.com/location/FitCollectiveDenver ### 6. Unite Fitness Group Training Golden Fitness center offers intimate space with upbeat energy and welcoming community. Classes feature dynamic workouts with motivating music and supportive instructors. Environment feels friendly and approachable, fostering connection beyond exercise. - Address: 2600 East St, Golden, CO 80401, USA - Atly: https://www.atly.com/location/UniteFitnessGroupTrainingGolden ### 7. Manic Training Highlands Ranch Gym Gym combines casual atmosphere with supportive community where coaches work out alongside members. Energy stays high and motivating without intimidation, welcoming all ages and skill levels. Offers varied classes including HIIT, strength, and yoga, keeping workouts fresh and challenging. - Address: 2000 E County Line Rd # 2000B, Highlands Ranch, CO 80126, USA - Atly: https://www.atly.com/location/ManicTrainingHighlandsRanchGym ### 8. The Gym Colorado Powerlifting gym offers 24/7 access with well-equipped spaces and no wait for equipment. Friendly, supportive community creates a welcoming atmosphere without judgment or intimidation. Programming suits all skill levels, blending strength training and HIIT workouts. - Address: 10155 E 29th Dr Ste 130, Denver, CO 80238, USA - Atly: https://www.atly.com/location/TheGymColorado ### 9. VASA Fitness Huge, spacious gym with well-maintained equipment and multiple amenities like a pool, sauna, and basketball courts creates a supportive atmosphere. Energy stays consistent and welcoming, with a friendly vibe and plenty of room to work out. - Address: 3020 N Nevada Ave, Colorado Springs, CO 80907, USA - Atly: https://www.atly.com/location/VASAFitness28 ### 10. The FIIT co. Gym space includes multiple rooms with top-tier equipment and a circuit setup that lets people work at their own pace. Atmosphere stays inviting and energetic, fueled by fun music and a community focused on hard work and camaraderie. Classes vary from cardio to strength and boxing, offering challenging workouts suitable for all levels. - Address: 2110 Market St, Denver, CO 80205, USA - Atly: https://www.atly.com/location/The-FIIT-co ### 11. Cerus Fitness Gym space combines wide variety of classes with high-quality equipment for all fitness levels. Energy stays supportive and inclusive, creating a friendly community that encourages progress and connection. Open all day, it suits both group training and individual workouts. - Address: 3771 Monarch St Unit F&G, Frederick, CO 80516, USA - Atly: https://www.atly.com/location/CerusFitness ### 12. Fit House Denver Fitness center combines welcoming atmosphere with supportive community and science-driven programs. Facility includes cold plunge, sauna, and recovery rooms for wellness and injury prevention. Energy stays motivating and non-judgmental, welcoming all ability levels. - Address: 888 S Jason St, Denver, CO 80223, USA - Atly: https://www.atly.com/location/FitHouseDenver ### 13. Endorphin Broadway Gym offers friendly community and inclusive atmosphere with small class sizes that encourage all skill levels. Energy stays fun and motivating while workouts remain challenging and adaptable to individual needs. - Address: 2288 S Broadway, Denver, CO 80210, USA - Atly: https://www.atly.com/location/EndorphinBroadway ### 14. Endorphin City Park Open workout areas combine with flexible class schedules and 24-hour access to support varied fitness routines. A welcoming community fosters a judgment-free zone where all levels exercise comfortably. Classes range widely from HIIT to yoga, each designed to be challenging yet inclusive. - Address: 3170 E Colfax Ave, Denver, CO 80206, USA - Atly: https://www.atly.com/location/EndorphinCityPark ### 15. 212 Performance Gym Gym combines indoor/outdoor vibe with high-quality, specialty equipment like pendulum squat and air runner treadmill. Atmosphere stays friendly and motivating, with a small, respectful community focused on growth and performance. - Address: 7399 S Tucson Way STE C3, Centennial, CO 80112, USA - Atly: https://www.atly.com/location/212PerformanceGym ### 16. HOTWORX - Colorado Springs, CO - Dublin Infrared heated saunas create a warm, supportive atmosphere with small class sizes that offer personalized workouts. The studio maintains immaculate cleanliness and provides 24/7 secure access, allowing flexible workout times. Members experience a laid-back, encouraging vibe with respectful interactions and a variety of challenging classes. - Address: 6545 Issaquah Dr, Colorado Springs, CO 80923, USA - Atly: https://www.atly.com/location/HOTWORX---Colorado-Springs-CO---Dublin ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.