What are the opening hours?

Monday 5am - 8pm Tuesday 5am - 7pm Wednesday 5am - 8pm Thursday 5am - 7pm Friday 5am - 7pm Saturday 6:15am - 12pm Sunday 6:15am - 12pm

Orangetheory Fitness Thornton

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Thornton, CO
Orangetheory Fitness Thornton

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Orangetheory Fitness is heart rate zone training that delivers a full body group workout.
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Orangetheory Fitness in Thornton, CO offers heart rate zone training that delivers a smarter way to work out. Experience an expertly designed, full-body group workout combining cardio and strength training with real-time tracking for measurable results you can see and feel. Here in Thornton, your heart rate sets the pace, enabling our triple-certified coaches to get you into the optimal zone. The result is a personalized fitness experience tailored to your fitness level.

11/01/2026

Congratulations to all of our amazing members who finished strong

11/01/2026

That’s a wrap on 2026!

11/01/2026

After 8 days of Hell Week, today you call the shots. Base Day or All Out Day … what’d you choose? ⬇️

10/31/2026

What happens in Hell Week doesn’t stay in Hell Week. Especially when you earned the shirt to prove it. 🔥 Hell Week 2026, you were weird, wonderful, worth it, and officially in the books! Now show off that shirt in the comments. 👇

10/31/2026

If we’re going out, we’re going out in a Blaze of Glory. 🔥 Day 8 of Hell Week. Halloween. One final workout. 🎃 Nobody’s finishing this one alone. 30 nonstop minutes of Tornado chaos, distances to chase and a team beside you pushing toward the finish. One last time. Let’s raise some hell. 🤘

10/31/2026

Last day of has arrived! Let’s rage!

10/30/2026

100 here. 200 there. Bragging rights everywhere. 🧡

10/30/2026

You still have one more day to earn that shirt! Prebook it right meow

10/30/2026

There are no wrong choices today. There are also no easy ones. 💀 Day 7 of Hell Week is here and just like that, all hell breaks loose. Pushes that test how long you can hang on, your choice to lift more or row more and burnouts waiting around every corner. Decisions, decisions. 🤭

10/30/2026

Holy Shirt! Still 2 more days to earn yours!

10/29/2026

The fire’s already burning. Time to add fuel. ⛽ Day 6 of Hell Week is Fuel the Flames, where every rep and every 3-minute challenge adds a little more to the fire. The reps keep climbing, the recovery gets shorter and the flames only get bigger. 🔥

10/29/2026

shirts are flying off the shelves faster than you can say HELL! Still 3 more days to get it in and get er done.

10/29/2026

Wow! Congratulations Troy Homewood on 1,500 classes! We are so glad we can call you our member and our friend! Here is to 1,500 more ☺️

10/28/2026

Where there’s smoke, there’s Hell Week. 💨 Day 5: Smoke Rises brings elevation gains to chase, switches that keep you moving and a burpee that builds piece by piece. Buckle up, it’s about to be a whirlwind. 🌪️

10/28/2026

Just a casual Tuesday at aka bing b**g!

10/27/2026

Some things are bigger than a workout. 💗 This Breast Cancer Awareness Month, we’re celebrating Coach Jenna, her health and the community that showed up beside her through it all.

Jenna’s Orangetheory Mt. Prospect family came together at the Lemons of Love 5K to honor her and everyone whose life has been touched by breast cancer, a reminder that the strength we build together reaches far beyond the studio.

Here’s to Jenna, to good health and to every person who has fought, supported, remembered and kept showing up. We’re so grateful to celebrate this chapter with you, Coach. 🧡

10/27/2026

Day 3 of was extra spooky

10/27/2026

You know what they say about playing with fire. 👀 Day 4 of Hell Week is all about one thing: blazing the legs from start to finish. Tread more or row more, the choice is yours. And with mini bands in the mix, there’s no escaping the heat. Good luck, legs. 🥵

10/26/2026

Day 2 of was a wild ride amirite?

10/26/2026

Pick your poison. You’re in the hot seat either way. 🔥 Day 3 of Hell Week brings the burn with big rows, distance on the tread and reps that come with a catch. Choose wisely. The burn is finding you no matter what. 😮‍💨

Address

4243 E 136th Avenue
Thornton, CO
80602

Opening Hours

Monday	5am - 8pm
Tuesday	5am - 7pm
Wednesday	5am - 8pm
Thursday	5am - 7pm
Friday	5am - 7pm
Saturday	6:15am - 12pm
Sunday	6:15am - 12pm

Telephone

+17209291649

Website

https://www.orangetheory.com/en-us/locations/thornton-colorado-0557?utm_medium=seo&utm_source=fb&utm_term=corporate&utm_

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