Fitness Underground

Category: Gym in Upland, California

Address: 1410 E Foothill Blvd Suite JK, Upland, CA 91786, USA

Phone: +19099216908

Opening hours

Sunday: Open 24 hours

Monday: Open 24 hours

Tuesday: Open 24 hours

Wednesday: Open 24 hours

Thursday: Open 24 hours

Friday: Open 24 hours

Saturday: Open 24 hours

Reviews

Alexander Torres

Aug 27, 2022

I have been training at Fitness Underground for about a year and a half. I originally started training with Ian, the owner, to get in shape for my wedding. Ian is not the first trainer I have used but his approach to working out has truly changed my life. The first couple of months were hard, not only because I was not used to working out to that extent, but also because getting up and working out before work is difficult. Still, that hard work changed me, and I do not see myself not having a trainer like Ian ever again. Working out twice a week with Ian truly gave me the best results I have ever had. Now I have a 9-month year old baby and can only train with him once a week. I look forward to that training session every week and any chance I get, I try to squeeze another session in. I drive 30 minutes in the opposite direction to get there every week and I have no regrets. If you are looking for a gym that’s open 24/7, has legit equipment for deadlifts, squats, powerlifting in general, I promise you, Underground Fitness is where you need to be. It is of course clean, well maintained and has healthy food/snacks readily available but what is most important to me is the time, energy, and effort Ian puts into every session. I whole heartedly where the apparel and genuinely see Ian as a friend. Don’t believe me? Come on Thursday mornings so I can prove you wrong.

Casey Smith

Jan 17, 2019

I joined this gym in early December to start getting stronger and to lose some weight, Ian and Marisa are great! In just the month I've been training my squat has gone up 45lbs and my bench has gone up 35lbs great place if you're looking for a strength training or powerlifting gym. #Underground

Viridiana Loera

Mar 22, 2018

This gym is awesome! I enjoy coming to bootcamps in the morning at 6 am. Marisa is a great trainer, and really cares about you. If you have an injury and let her know. She will help you modify each exercise. Bootcamps are always fun and motivating. We all have such a great time. It really makes working out fun! I like that Marisa incorporates different exercises and she even does kickboxing Wednesday's.

Brooklynn H

Mar 22, 2018

Nicest owners! Professional and modern place. You can tell the trainers are all there because they truly love it and thrive off of helping their clients. It’s a great experience, especially comparing to the bigger chain gyms that only care about the money and memberships. Fitness Underground is different and it is so refreshing!

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Questions & Answers

what is charge for gym

joe gutierrez | Sep 4, 2019
Casey Smith | Sep 4, 2019

It's currently a $40 a month membership, but they have pre pay specials on there Instagram @fitnessundergroundofficial

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Who has the most gyms in the US?

Cole Browder | Aug 4, 2022
Fitness Underground | Aug 4, 2022

Probably 24hr Fitness

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