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    Island Grit Crossfit

    5.0 (20 reviews)
    Closed 5:20 am - 7:00 pm

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    Nora S.

    Great group of peeps.....all supportive, makes workin out quite fun! Steve and Harold are very knowledgeable. :)

    It was amazing seeing so many people in our box turn out for the Strength in Numbers competition and kick butt!
    Julie G.

    CFMS is AMAZING! I love the trainers and the community. Trainers Betsy, Steve and Harold are well informed, experienced and encouraging and I am a better athlete because of it. I was nervous when I first joined because I was new to Crossfit and everyone looked so experienced. I quickly learned how amazing the community is. Everyone encouraged me and rooted for me even when I was the last to finish. They pushed me forward when I was frustrated with moves like pull ups. People encouraged me by telling me, they were frustrated when they first started too but if I put in the work I would get there and I did! If you're thinking about trying Crossfit for the first time or checking out a new box this is the place for you!

    Fun day lifting with my girls!
    anita n.

    I love CrossFit Mariner Square! This is the kind of box that make you feel like home. The coaches are extremely friendly and patience. Crossfit members can use the whole gym facilities including over 80 fitness classes every week, hot tub, steam, sauna and an indoor pool so I can mix up my workouts! I CrossFit 4 times a week and mix with yoga, pilates and AB classes. They are all covered under my membership and under one roof! I highly recommend CF Mariner Square to anyone that wants to get fit or change their lifestyle.

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    14 years ago

    I love the community, love the coaching from the trainers and the WODs kick my BUTT!! It's great!!

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    Review Highlights - Island Grit Crossfit

    Crossfit Mariner Square sits inside the Alameda Athletic Club (formerly known as Mariner's Square Gym).

    Mentioned in 5 reviews

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    Urban Fitness - Coach Christy at the ready to answer any questions

    Urban Fitness

    4.7(102 reviews)
    0.7 mi

    see my old reviews? back in 2012and 2014??? well since then there's been lots of life: kids and…read moreaging parents and working and and and... AND now I'm back, 10 years later. still flipping tires, still pushing sleds and lifting heavy. Vibe is as friendly as ever. Coaching continues to be excellent quality. Still no posturing or ego to be found. Just a great a$$ kicking workout no matter your age or fitness level.

    I have been coming to this gym for years and it is my favorite part of the day, especially after a…read morestressful workday. With the coaches help, I've lost over 40 pounds of fat in the span of a year and gained muscle mass. Urban Fitness emphasizes using free weights, focusing on form and technique before lifting heavy. You'll find that while you're able to squat heavy on machines, poor posture and bad habits from not bracing your core does little in the real world. The style of training can be transferred to every day chores from carrying bags of groceries up the stairs in one trip, to lifting your fridge while remodeling your kitchen. I never realized how little I could lift on my own without machines involved. The workouts are class based and has a coach demonstrating each set and correcting form. As intimidating as a class workout sounds, the community and friendship bond you will find in class are unmatched. It's really easy to make friends, especially if you're someone working from home and need a change of pace, this is a good place to go. The people I've met here became my family. We go on snowboarding trips and run spartan races together. It's not CrossFit and all levels are welcomed. The highly trained staff can provide all different levels of workouts whether you're new, looking for a challenge, or injured. There's something for everyone.

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    Urban Fitness - Coach Jesse showing Winston proper form of scratching

    Coach Jesse showing Winston proper form of scratching

    Urban Fitness - Fitness family

    Fitness family

    Urban Fitness - TRX work

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    TRX work

    Bladium Sports & Fitness Club - Bladium's Open Gym Days (Free Entry)

    Bladium Sports & Fitness Club

    3.4(377 reviews)
    1.4 mi

    I have been a member since ~2018. I love this club because it is gigantic and it is almost…read moreliterally across the street from my warehouse loft. If you go to the Crunch Gym in Alameda and then the Bladium -- you'll have a new appreciation for space and room to breathe. The remodeled men's locker room is cool -- most importantly -- it is clean and does not stink. I only use the facility for cardio and free weights. The machines and free weights are probably 30+ years old (seriously), but they work and I like the old school steel plates. The entire facility has been under construction and it looks like they're going to make the facility like something on par with the NFL Combine's fitness facilities. I learned during the pandemic that new weights and weight machines cost a fortune, but I'm hopeful they will update the equipment. Most importantly, I hope they extend the hours of operation on the weekends. Indeed, their hours of operation should be 5 a.m. to 10 p.m. (minimum) every day. Oh, there is always free/available parking and the gym manager is extremely responsive/professional. Bottom line: this gym has the space and location to become the best fitness facility on the East Bay -- but they must extend their hours and spend a small fortune on new weights/weight machines. The images I have included with this review are dated, but they give you a good idea of the size of this place and show the degree to which they are re-doing the place!

    I grew up playing at The Bladium since I was 4 years old with lil kickers. I played with the Bay…read moreOaks and SJND for indoor footie and played with my AAU basketball team in this facility. So many memories, like winning a state championship and rock climbing with my friends. The Bladium was an experience: to drink, to play sports, to work out, to have fun. I recently came back after finishing college, just to find the main football field and a majority of the weight room gone to pickleball. At first, I did not mind, however, it feels like the only people who come in are pickleball players. Its sad to see my friend's old family business being made into a pickleball center. Even the new company's logo shows where their priority is at. Heartbreaking to see. I will always remember the sounds the floorboards made.

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    Bladium Sports & Fitness Club
    Bladium Sports & Fitness Club - Tiempo al tiempo

    Tiempo al tiempo

    Bladium Sports & Fitness Club - Outdoor view

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    Outdoor view

    Rise Bodyworks - Personal training

    Rise Bodyworks

    4.6(216 reviews)
    2.4 mi

    This review is long overdue. I've been coming here since September 2025 -- first for pilates, and…read morenow also a gym member. Pilates: I love attending the reformer classes, particularly Alba's and Jessica's, but I've attended most if not all of the instructors' classes and they've all been great. The weekend classes do get kind of quick so it's better to book in advance. Gym: Clean, never packed (at least when I go). I always find space to stretch with no issue and have never had to wait for what I need. People put their weights back. There are spray bottles and cloths to wipe what you use after. The bathrooms are clean, and the red light sauna is a treat (honestly my deciding factor for adding the membership lol). I've yet to use the cold plunge or the showers. You get $10 off when you have more than 1 membership. I had a billing issue in the beginning and they were very responsive and helpful. All together I pay $164/mo for both. The lack of a parking lot is a mild inconvenience, but street parking is hardly an issue with all the residential streets with free parking around Park. Great gym!!

    As a woman and a senior, I have been taking pilates classes at RISE to build and maintain strength…read moreand flexibility. The teachers there make it enjoyable and give excellent workouts to great music. Recently I started working with Erin, a personal trainer who is very knowledgeable and who took the time to learn about my fitness level, goals and limitations. Now she creates really good sessions that are just right for me. When we're done, I feel great!

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    Rise Bodyworks - Bootcamp Class with Brandi

    Bootcamp Class with Brandi

    Rise Bodyworks - Upgraded bathroom

    Upgraded bathroom

    Rise Bodyworks - Women's locker room downstairs

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    Women's locker room downstairs

    Sequoia Fitness - awesome training awesome place and awesome people thanks matt for all your support !!

    Sequoia Fitness

    4.8(26 reviews)
    1.8 miRancho San Antonio, East Oakland

    Ive been a gym go'r all my life. But as you change so does ur habits. I spent some time looking…read morefor a reason why I should go beyond 'Looking Great Naked'. But first I had to signup. I spent NYE 2022 in Hong Kong & did a great deal of walking alone & thinking to myself. I decided to signup there and when I got back Id attend. Ive always been reluctant to do crossfit simply bc it didnt look like me (body, community, etc). But when I walked thru the door (insert meme "How yall doing!") I found what I really wanted which was encouragement w/i a Community. Now I was most impressed driving by daily or riding the 14 bus frm East Oakland to Downtown for the office...seeing their smart use of outdoor space. This brightened the community & demonstrated you can throve anywhere in Oakland w/ positive intentions & smiling people. Now its only been a few sessions yet Ive done 2x a day but when you experience anything it has to be inside first! Glad I went to see what its all about...and I can use any weight Id like! Special S/O to Jason(trainer extraordinaire) who is POC...Ive never seen many POC so FYI visibility matters..& they are always on time & point! (Prayer Hands) Fyi no pics just imagine me naked hahah

    I needed a place to do CrossFit WODs with knowledgeable instructors and I didn't want to get lost…read morein a big gym with no one to talk to. Some of these places have so many members that you can feel lost in a crowd. CLASS SIZE: Enter Sequoia CrossFit, where the biggest thing is the actual gym building! The classes are a perfect handful of 10-15 people and the instructors keep a keen eye on your form and make helpful suggestions. DOGS: But the best thing about it is that it is dog-friendly!!! Matt, the owner, has welcomed my dog, Stella, with open arms and even lets her run around with his own pups before and after class when everyone has left. It's the thing she looks forward to the most, more than the actual dog park! LOCATION: One thing I should say, though, is that there are no big signs so I had a hard time finding the gym next to a mechanic shop and buffet. I was nervous to go in and I tried researching it on Google Maps but even there you can't tell where the building is, especially when the hangar doors are shut. Just know that it is a dark grey building. I'll try to post more pics of the outside and post them here. FRIENDLINESS: As a travel nurse, I move often from city to city. This gym has felt like a diamond in the rough, not because of the huge space, free parking, large bathrooms, new equipment, and other amenities, but because of cool people like Coach Matt and Coach Chris and the rest of the members here. I'm currently doing the Open right now, and they have been so accommodating even when I have to retry to get a better score. And now I'm looking forward to their in-house competitions where they have silly trophies and the goal is just to have fun and get to know other members! I could write more about this wonderful space, but I recommend that you come and check out their free introductory class and packages before committing to a membership if it feels right. I promise that you will feel so vibrant and accomplished because of all the support you'll receive that you will easily rise to the challenge.

    Photos
    Sequoia Fitness - Matt likes to point at things

    Matt likes to point at things

    Sequoia Fitness - You can tell it works

    You can tell it works

    Sequoia Fitness - Am work out!

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    Am work out!

    Island Grit Crossfit - intervaltraininggyms - Updated September 2026

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