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Anna Bach
via Google I’ve been attending group sessions with Impact Fitness for two years now and it’s been great for my mental and physical health. I enjoy the pace of the classes and that the level of difficulty can be tailored to individual needs. Liam and Ed are super welcoming, encouraging, and knowledgable coaches. The facility is clean and well organized - there are showers, lockers, changing rooms, and towels. I appreciate that they keep the gym refreshed with updated and new equipment.
I've seen improvement on my form and noticeable changes in my physique. The group sessions keep me motivated and disciplined to reach my fitness goals. It has been a worthwhile addition to my routine.
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Jessica Tungvia Google I have been training with Liam and Impact Fitness Oakland for the past 3+ years, and I am so grateful to Liam for his outstanding, supportive, patient, and nuanced expertise. He is the best personal trainer I have ever worked with, bar none. Prior to working with Liam, I lifted weights on and off for about a decade, but struggled with consistency and to make any real progress. Thanks to Liam's focus on functional strength, injury prevention, and proper form, I am the strongest I have ever been.
I think one way that Liam truly stands above the rest is his ability to easily pivot to another variation/option of exercise if something isn't working in your body (if something is causing pain or is activating the wrong muscle groups outside of the targets etc) - he has such a strong foundation of knowledge that he is able to seamlessly make adjustments or switch to an alternative. He truly does put the "personal" in personal training. Thanks to our hard work together, I have been able to deadlift and bb hip thrust nearly 1.5x my body weight, and continue forward on a progressive strength building program - all without a single injury.
Both Liam and Ed are super nice and passionate about what they do. The facility is clean, well appointed, and lovingly maintained. I look forward to many more years of training here!
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Robert Crosbyvia Google I’ve been training with Liam at Impact Fitness for the past few months, and I couldn’t be happier with the experience. After trying two other trainers in the Oakland area when I first moved here, Impact Fitness was a clear winner. The gym itself is top-notch, but what really sets it apart is Liam’s expertise and the results I’ve seen.
Liam has a great balance of pushing me past what I thought I could do while still being attentive and responsive. He pays close attention to form, keeps my goals front and center, and regularly checks in to make sure each workout and the overall program are on track. It’s clear he genuinely cares about his clients’ progress.
If you’re looking for a trainer who combines knowledge, encouragement, and accountability in a high-quality setting, I’d highly recommend Liam and Impact Fitness.
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Stephon Allenvia Google I’ve been training at Impact Fitness Oakland for over 3 years and it’s been life-changing. The workouts are never boring—each session brings something new with different exercises and techniques that really challenge me while helping me grow stronger. The coaches are amazing, always supportive and focused on making sure you do things the right way. What really sets Impact apart is the atmosphere—it’s motivating, positive, and feels like family. Everyone encourages each other, and that makes a huge difference in staying consistent. If you’re looking for personal training that pushes you, teaches you, and makes you feel supported, this is definitely the place to be!
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Grace Chenvia Google Liam is an exceptional personal trainer who’s been key to me and my partner’s mountaineering success. In 2021-2022, he trained me for Mt. Vinson and Denali, building my strength to haul a heavy backpack and sled—starting from scratch on fitness, diet, and recovery. With his guidance, I summited both mountains, stronger and smarter about my health.
Fast forward to 2025, I trained with Liam again for an Everest summit attempt. This time, 5 days a week, he took my foundation to the next level—chin-ups went from a struggle to 2-3 full reps, and I’m deadlifting 1.5x my body weight, a huge win. Liam’s expertise on form and pacing keeps me injury-free while lifting heavier. He’s always aware of what I can handle, pushing me just right. Thanks to him, I’m heading to Everest confident in my strength. Highly recommend Liam to anyone serious about leveling up! 💯⬆️
