8AM - 12PM 4 - 7:58PM
1239 Reamwood Ave, Sunnyvale
Gyms
“Too many good things to talk about this community. I would like to put this in simple and best in my way !! S - Sweat a lot M - Muscle building A - Avoid injuries SH - Stay Healthy”
“This gym is a true fitness gem. Edwin ensures a top-quality environment with excellent equipment and a clean, welcoming atmosphere. My trainer and good friend Mark that works here is a real professional, offering personalized, effective workout sessions. The combined passion and professionalism of all trainers here create an unbeatable gym experience that caters to all fitness levels. Highly recommended for anyone looking to achieve their fitness goals in a friendly and supportive setting.”
5:30 - 11AM 4 - 6PM
1206 Mountain View -Alviso Rd C, Sunnyvale
Gyms
“Enjoyed all the workouts. Have been going to this gym for more than 8 months and will continue next year as well. Communication has been very easy. Xavier and Stacy give a good overview of the workout before the start of the session. The monthly newsletter helps me to understand what to expect in the upcoming month.”
“This one seems a little bigger than the other one. A little more people compared to tower 1. Open court schedule is different than tower 1. I was told it share the access with tower 1 and Amazon employees can register for access. But request is processed once per week. Bu the way and front desk and the instructors onsite are really nice.”
7 - 8AM 5 - 7PM
477 N Mathilda Ave, Sunnyvale
Gyms
“My husband and I have been going to Ironwill Fitness for two years now - time flies when you are getting fit! Chris programs workouts that are challenging but accessible for all skill levels. We will see you at the next workout!”
“I've been taking classes since Jan 2024, and it's been the best experience ever. Staff are so wonderful & they implemented this new early entry that gives plenty of time to warm up. Plus I get to talk to the coach!
Recommended to my friends, and I recommend it to you all. They have a free class, just to try ?”
5 - 11AM 3 - 8PM
1253 Birchwood Dr Ste C, Sunnyvale
Gyms
“I've been coming to Sunnyvale Fitness for 2 years now and have had huge success in achieving my fitness goals. I attend Chuck's boot camp class in the mornings. His class is held 4 days a week with a rest day on Wednesday's. Every class is a total body workout that includes mix of cardio, weight training and core strengthening exercises. The class sizes for boot camp are small enough that you will have times where there is one on one training. Chuck shows us how to do each exercise with proper technique and form. His classes are challenging but effective in achieving results. I recommend taking this class.”
“Group class teachers for Zumba Emily on Tuesday 7pm & Sunday 11am, U-Jam Fitness Rossy on Monday & Wednesday 7:30pm, Bodycombat on Thursday 7pm are fantastic and fun deserving 10 out of 10. They welcome students at any levels but management provides a short 1-month notice to close this location without offering their classes at a nearby branch. That sucks. So many people in class join 24 Hours because of these good teachers. If management doesn't address these concerns, I might consider canceling my membership.”
“This location has an excellent pool that I have used several times in early August 2025. I typically swim between 7 a.m. and 9 a.m., and then again in the evening between 9 p.m. and 11 p.m. The swimming pool is open 24 hours a day, though it does not have a lifeguard on duty. It features four lanes, which I believe are about 25 yards or 23 meters in length. During my visits at these hours, the lanes are generally not busy. I am not sure how the closure of the other Sunnyvale location will affect pool traffic here.
The water is clean and relatively clear, and I would give the entire wet area a rating of 4 out of 5 stars. Both the sauna and steam room were fully operational during my visits. The jacuzzi was also hot and in good working order.
The lockers and showers are well-maintained, and I would also rate them 4 out of 5. A special shout-out goes to Vin, who was friendly and welcoming at the front desk during one of my evening visits.”
“its always great there! the variety of upper, lower, and cable machines are very nice! the staff and trainers are very friendly, professional and knowledgeable! the front desk staff is very personable and helpful with any needs!”
Open 24 hours
733 S Wolfe Rd, Sunnyvale
Gyms
“I recently worked with Coach Brian Koho as my personal trainer, and the experience was fantastic. As someone who didn't have much experience in the gym, I found Brian to be incredibly helpful, professional, and approachable. He took the time to teach me the basics of strength training and helped me build a workout routine tailored to my needs and goals. Highly recommend working with him if you're looking for a knowledgeable and supportive trainer”
“I recently went to the city sports by the airport and ….was very surprised to find that CS quite filthy. It made me really appreciate what I have here in Sunnyvale bc our gyms are ALWAYS clean and super spotless and bright. The other one was really gloomy and I kind of just felt disgusted being there and kept thinking, “I won’t be returning here.” Even the staff I feel is a lot better. I specifically want to shoutout Camila and Juan —they are amazing. I don’t know if I look forward to my workouts more or seeing their welcoming faces. They always acknowledge the regulars, always make it a point to say hi even when they themselves are working out. They definitely make the gym what it is: spotless and such a comfortable place.”
“One of the best corp gyms, which I have been visiting regularly for over 4 years. The equipment has been constantly upgraded, the swimming pool is nice and clean. A spacious locker room with sunna and steaming room. Very friendly staff too.”