# Gyms in Thornton > You need a gym that fits your routine without the unnecessary friction of a crowded floor. Source: https://www.atly.com/united-states/colorado/thornton/best-gyms ## Places (11) ### 1. CrossFit MOB Huge gym with well-maintained equipment and clean locker rooms offers a spacious, welcoming space. Warm community hosts group workouts and fun events like hikes and documentaries. Everyone enjoys supportive atmosphere focused on proper form and inclusion. - Address: 3750 E 120th Ave, Thornton, CO 80233, USA - Atly: https://www.atly.com/location/CrossFitMOB ### 2. Champion Boxing Small gym with a strong community and welcoming atmosphere fuels intense cardio and boxing fundamentals. Training suits all ages and skill levels, creating a family-like support system. Energy stays motivational and competitive throughout sessions. - Address: 8520 Washington St suite a, Thornton, CO 80229, USA - Atly: https://www.atly.com/location/ChampionBoxing ### 3. CrossFit ELM Gym offers well-maintained facilities and expert coaching with detailed movement breakdowns. Atmosphere stays welcoming and inclusive, promoting body positivity and personalized attention. Community feels friendly and motivated, supporting all fitness levels. - Address: 12301 Grant St #150, Thornton, CO 80241, USA - Atly: https://www.atly.com/location/CrossFitELM ### 4. F45 Training North Thornton Spacious studio offers well-maintained equipment and a wide selection of weights for varied workouts. Classes bring high energy and awesome coaches who create a motivating, inclusive vibe. Strong community support keeps everyone engaged and consistent. - Address: 14340 Lincoln St, Thornton, CO 80023, USA - Atly: https://www.atly.com/location/F45TrainingNorthThornton ### 5. Orangetheory Fitness Gym boasts state-of-the-art equipment and a supportive community that fuels passion for workouts. Team training style offers a fresh, engaging experience. Staff are friendly and welcoming, creating a strong community vibe that motivates every visit. - Address: 4243 E 136th Ave, Thornton, CO 80602, USA - Atly: https://www.atly.com/location/OrangetheoryFitness510 ### 6. Flow Vault Parkour and Ninja Gym blends safe training with engaging coaching for all skill levels. Classes pump punk remix soundtracks creating high energy. Focus on parkour and ninja training draws kids and adults alike. - Address: 9499 Washington St suite b, Thornton, CO 80229, USA - Atly: https://www.atly.com/location/FlowVaultParkourAndNinja ### 7. The Spot Climbing Gym Old school gym with 5 autobelays and a bouldering area offers solid routes for all levels. Laid-back vibe and quiet peak hours make climbing relaxed. Bizarre lighting affects hold visibility but adds to its unique charm. - Address: 9499 Washington St c, Thornton, CO 80229, USA - Atly: https://www.atly.com/location/TheSpotClimbingGym1 ### 8. Chuze Fitness Fitness center shines with clean facilities and a friendly atmosphere. Equipment variety includes extra squat racks and a welcoming daycare. Space feels cramped but supports complete workouts with sauna and pool. - Address: 650 E 102nd Ave, Thornton, CO 80229, USA - Atly: https://www.atly.com/location/ChuzeFitness28 ### 9. Gold's Gym Gym offers 24-hour access with top-notch equipment and a quiet atmosphere at night. Separate saunas for men and women keep it comfortable. Cleanliness and a salt dry sauna make it ideal for serious trainers and late shifts. - Address: 550 Thornton Pkwy #210, Thornton, CO 80229, USA - Atly: https://www.atly.com/location/Golds-Gym10 ### 10. X Gym Facility offers 24/7 access with top-tier equipment that stays clean and well maintained. Friendly staff foster a welcoming atmosphere and strong community vibe. Gym rarely gets busy, so machines are easy to use without waiting. - Address: 4251 E 104th Ave, Thornton, CO 80233, USA - Atly: https://www.atly.com/location/XGym1 ### 11. Planet Fitness Gym features spacious locker rooms and a large variety of equipment in a clean, well-maintained space. Atmosphere is non-judgmental and chill, with no overcrowding and a focus on safety. Staff monitor phone use to keep members focused. - Address: 16509 N, 16509 Washington St, Thornton, CO 80023, USA - Atly: https://www.atly.com/location/PlanetFitness780 ## 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.