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Fitness Underground

4.8

About this business

24 Hour Access Memberships, Personal Training and Physical Therapy! To become a member, fill out the "contact" form on our website to set up an appointment! 

Location details

1410 E Foothill Blvd Suite JK, Upland, CA, 91786, United States

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4.863 reviews
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Koach Power's profile image
Koach Power 
on Google
6 days ago

This is a great gym! All the equipment you need and helpful members and coaches willing to direct you. This place is responsible for some of my favorite adult memories! 

Scott's profile image
Scott 
on Google
5 months ago

One of the best gyms I’ve been to great. 24/7 access, more than enough equipment and great people. Definitely recommend it 

Rick Gonzalez's profile image
Rick Gonzalez 
on Google
5 months ago

Fitness Underground is as close to perfect as it gets. It’s open 24/7, always clean, and never overcrowded. The atmosphere is great. Everyone is friendly and follows proper gym etiquette. Their social media is a goldmine of useful fitness tips, and the music is always on point since members take turns curating the playlists. Easily one of the best gyms around. 

Jonathan Jabbour's profile image
Jonathan Jabbour 
on Google
5 months ago

just started coming here with my buddy recently and i don’t regret it. they have the best lifting equipment and machines i’ve seen out of any other gym i’ve been too in a 30 minutes drive. The owner Ian is awesome, he’s super cool and chill. the gym is super clean and the community is amazing. you can come in at 6pm and see it for yourself. you’ll see people cheering for a random dude hitting his PR. It’s a really cool environment. 

Riley King's profile image
Riley King 
on Google
5 months ago

This gyms great. They have great equipment, everyone is very friendly, and the gym is extremely clean. 

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Frequently asked questions about Fitness Underground

How is Fitness Underground rated?

Fitness Underground has a 4.8 star rating with 63 reviews. 

When is Fitness Underground open?

Fitness Underground is open now. It is open 24/7. 

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