Fitness Underground

Fitness Underground

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Fitness Underground offers and in-person small group Strength & HIIT training.

11/29/2025

20% off all new member first month’s memberships!

10/09/2024

A little mid-week magic at our favorite place! 🔥💪🏻

Our weekly programming:
Mondays - Full Body STRENGTH
Tuesdays - Lower Body STRENGTH
Wednesdays - Cardio Conditioning & Abs
Wednesdays - Yoga Sculpt
Thursdays - Upper Body STRENGTH
Fridays - Cardio Conditioning & Core
Saturdays - Full Body HIIT
Sundays - Yoga

Now is the perfect time to come check out Fitness Underground! Beat the holiday crazy, be part of our end of the year member events, and be in a routine before the new year! You won’t regret it!

09/01/2024

BASECAMP is starting back up for fall!

Registration is open for our September session starting Monday, September 9th!

04/05/2024

Our gym community is 91% female. But our 9% male representation is quality over quantity. The guys were getting tired of the ladies having all the fun outside of the gym and last night they got their turn! Our first FU Guys Night was a fun one!

04/01/2024

BASECAMP Registration is open!

Let us help you get your kids moving! Every class has a combination of skill drills and games to improve their balance, agility, speed, and endurance while having fun and socializing with kids their age!

Www.vagaro.com/fitnessunderground/memberships

03/29/2024

Love being able to help raise money for our schools! We are doing another community sweat for a cause event next Saturday! You can choose from three class times. Sign up early to claim your spot!

Save The Date Tigers!

For our April Fundraiser at Fitness Underground right here in Erie! We are so excited to partner with Ashley!

Sign up for three open time slots: 7:15am, 8:15am & 9:15am to sweat for a cause and enjoy a Full Body HIIT class! (Space is limited!)

This class will be 100% donation based!

Class space is limited register in the link below under the 3 times available time slots: EES Sweat for a Cause!

https://www.vagaro.com/fitnessunderground/classes

03/14/2024

We love sponsoring this event! Erie Gives Back does amazing things for our community and we love being able to support them!

Who is going to join us this year?

MOM PROM 2024 SILVER SPONSOR SPOTLIGHT: FITNESS UNDERGROUND

A local favorite! Fitness Underground offers in-person small group Strength & HIIT, Yoga and Juniors training right here in Erie!

02/27/2024

Come join us on March 9th!

100% of all proceeds go back to Soaring Heights 🫶

🔷 Save The Date! 🔷

We are so excited to team up with Fitness Underground for a Full Body HIIT class as our next community event!

This class will be 100% donation based, give what you can to support Soaring Heights. Join us at,

Fitness Underground
149 Briggs St.
March 9, 2024
10:15 AM

Class space is limited Register now at https://www.vagaro.com/fitnessunderground/classes to ensure a spot.

02/19/2024

We love when we can give back to our community! Excited for this donation-only workout for Soaring Heights!

Open to anyone! Donation only.
Register at www.vagaro.com/fitnessunderground/classes

🔷 Save The Date! 🔷

We are so excited to team up with Fitness Underground for a Full Body HIIT class as our next community event!

This class will be 100% donation based, give what you can to support Soaring Heights. Join us at,

Fitness Underground
149 Briggs St.
March 9, 2024
10:15 AM

Class space is limited Register now at https://www.vagaro.com/fitnessunderground/classes to ensure a spot.

01/31/2024

February BASECAMP starts Monday!

Only a few spots left for the 6-10yr group on Mondays.

Snag your spot today!

Want your business to be the top-listed Gym/sports Facility in Erie?

Click here to claim your Sponsored Listing.

Location

Address


149 S Briggs Street
Erie, CO
80516

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm