Our Mission

Our mission is to build an environment where people can push towards their personal goals with the value of coaching at a reasonable price. We have a true passion to help people get stronger both physically and mentally. It is our aim to have every client that walks through our door fall in love with training and the process of bettering themselves because we know that the lessons you learn in the gym will carry over into every facet of your life.

Dylan best personal trainer in waltham

Dylan Gutheil

CSCS, PN1

Dylan grew up in Brookline, Massachusetts. Passionate about sports since childhood, Dylan played football and rugby in high school and continued his rugby career at Springfield College, where he earned a degree in Exercise Science. After college, he dedicated himself to the field of strength and conditioning. Since he retired from rugby, he has competed in powerlifting locally and at the national level. Dylan started personal training right out of college for 5 years until he got frustrated with the corporate training environment and decided there was a better way to deliver coaching that could have a bigger impact on more people’s lives. In 2016 his former college classmate and rugby co-captain, Jared and him decided to open Flight Performance and Fitness. Dylan has over ten years of coaching experience along with extensive expertise in the science of human movement, exercise physiology, sports nutrition, and biomechanics. Dylan’s main drive is to build flight to the best possible training facility it can be so it can help more people reach their personal goals and potential.

Jared Collinson

CSCS

Jared was born and raised in Sandwich, Massachusetts and gives credit to a young passion of fitness to advancing his career in sports and submerging him into the field of strength & conditioning. Jared had a long career in rugby where he won two national championships, played in many international competitions, and played professionally in Major League Rugby. Jared worked as the head strength and conditioning coach for the New England Free jacks of Major League Rugby in their first 3 seasons along with opening Flight Performance and Fitness with Dylan in 2016.

Magnus (Mag) Leonard

Magnus Leonard (Mag) hails from Marshfield, Massachusetts, where his early years were filled with playing lacrosse, basketball, and football. These sports ignited his passion for strength and conditioning, laying the foundation for his future career. Magnus began his academic journey at Franklin Pierce University, where he discovered his love for coaching. This newfound passion led him to transfer to Lasell University to major in Exercise Science. At Lasell, Magnus excelled both academically and athletically. As a dedicated member of the lacrosse team, he earned All-Conference honors for four years and was named Defensive Player of the Year twice. In addition to his collegiate achievements, Magnus spent his summers coaching club lacrosse, mentoring young athletes from elementary through high school. Now, Magnus is thrilled to bring his expertise and enthusiasm to our community. He is dedicated to building lasting relationships with clients and helping them achieve their fitness goals.

Dan Stone

NSCA, CSCS

Dan grew up in Potsdam, NY. A sports lover from the youngest age, he found passion in athletics of various kinds. Through high school he played soccer, basketball, golf, and was a sprinter and thrower in track and field. Spending his first three years of undergrad at Stonehill college, he ran on the track team as a short distance sprinter, and picked up rugby in the fall of his sophomore year. After his junior year, he transferred to the University of Notre Dame, where he put his focus into playing rugby at the highest level. After obtaining a degree in Environmental Engineering, he decided to pursue his passions in rugby and performance in Colorado, where he played for the Vail Men’s club, Denver Barbarians, and professionally for the Colorado XOs in 2021. Dan specializes in athletic development, and high performance habit building. Outside of Flight, Dan has also been an assistant coach for the Harvard Men’s Rugby team for the last two years. Dan is passionate and committed to helping you achieve life changing goals through knowledgeable and experienced coaching, programming, and holistic support.

Bryce

Bryce grew up in Greenwich, NY. Where he started his fitness journey playing football, basketball, and lacrosse from a young age. Battling with injuries, Bryce pursued a degree in kinesiology while continuing his collegiate lacrosse career at New England College. Finding himself wanting more, this led him transferring to Lasell University switching to a degree in exercise science. While in college, Bryce Coached men’s lacrosse at his high school Alma mater as well as running summer lacrosse programs from ages 10-20. With Bryce’s unique background, he’s prepared to help you with your fitness, recovery, and nutrition goals.

Maria

Maria grew up in Richmond, Virginia. She played basketball through high school and continued playing all four years during college. She holds a Master of Exercise Science & Wellness and has been coaching since 2015 with over eight years of experience. Maria interned and coached at various gyms before joining Flight Performance and Fitness. She is very passionate about helping you achieve your goals and being a better individual overall.

Everett

Everett was born and raised in Pendleton, OR. Growing up, he played several sports including football, soccer, basketball, baseball, and track and field. While in High School, Everett found a love for the weight room, as he recognized strength and conditioning as a tool to elevate his level of play. After High School, Everett attended Eastern Oregon University. While at EOU, Everett played for the football team, starting for four years on the offensive line. After graduating from EOU in 2023 with a degree in Health and Human Performance, Everett moved from Oregon to Massachusetts to live with his Fiance and pursue a career in Strength and Conditioning. Everett is passionate about helping clients reach their full potential, as well as contributing to a strong and healthy community.

Mody

Mody studied Exercise Science at the University of New Hampshire and began his journey at Flight Performance and Fitness through the intern program. Mody also leads the Flight Performance Youth Program, and works with young athletes to develop strength, improve their sport performance, and help develop skills that apply on and off the field . He is passionate about creating a training environment that is both challenging and fun, because athletes perform, learn, and grow best when they enjoy the process and feel comfortable with the coaches around them. Mody’s coaching philosophy is rooted in the belief that everyone should have access to the tools that gave him confidence and brought him joy. Strength and conditioning creates a sense of accomplishment and fulfillment, and Mody works to contribute to his clients’ success by collaborating with them, guiding their progress, and learning alongside them throughout their journey .

Brooke

PN1

Brooke grew up in Weston, Massachusetts and played basketball through college at Clark University. While preparing for collegiate athletics, she developed a passion for strength training and the weight room as a tool for performance and longevity. After college, Brooke expanded her athletic background through martial arts, including Muay Thai and Brazilian Jiu Jitsu. She began coaching fitness classes in 2019 and now specializes in personal training and individualized programming. Brooke is passionate about building relationships, supporting her clients’ goals, and contributing to a strong local gym community.

SEE WHAT EVERYBODY HAS TO SAY

EXCELLENT
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Based on 76 reviews
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Andrew Glaser profile picture
Andrew Glaser
March 26, 2026
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Flight Performance and Fitness was my first real strength training experience, and I couldn’t have asked for a better introduction. My experience was incredibly rewarding! From day one, all of the trainers knew my name, helped me through my workouts, and made sure I was using proper form. Dan Stone worked closely with me, took my goals seriously, and built a program that felt truly personalized. Magnus and Bryce were also always available to help and encourage me. I was honestly surprised by how much progress I made in only six weeks. Beyond the training itself, the gym has a fun, supportive atmosphere, with friendly coaches and a welcoming community. Highly recommend!
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Katie Carlson profile picture
Katie Carlson
March 25, 2026
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I've been going to Flight for a year now and all I got are these big ole muscles* *built with: careful consideration by my trainer Mody; continuous feedback and constant support from everyone at flight, community included; and, finally, a whole lot of fun. Truthfully, I won't be able to neatly summarize how good this place has been for me... just sign up, you won't regret it.
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Maldi Kellici
February 11, 2026
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I found out about Flight through my friend Marbnys, who runs Kimura Jiu Jitsu in Watertown. He and several of his clients swore by it. I joined Flight Performance with two goals in mind: strength and longevity. My trainer, Magnus, and I hit it off from the start. I had worked out for years using bodybuilding-style workouts that focused more on shaping muscles than building functional strength. I looked good, but I was always stiff, slow, and felt very unathletic. I also couldn’t seem to go three weeks without some sort of self-inflicted injury due to poor form. Until I started training with Magnus at Flight Performance, I didn’t think it was possible to work out without joint pain. Simply put, I’ve had better results with my nagging shoulder injuries here than I did after several months of physical therapy. The workouts have been intense, and I feel great every time. In addition to Magnus, several other coaches oversee my training. The gym is small and cozy, and you’re never crowded or waiting around for equipment. It’s the best investment I’ve made in myself and my health in a very long time.
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Josh Skenderian
December 23, 2025
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I have been working closely with Coach Mody for about a year now. This is a guy who you can’t sing enough praises about. He is knowledgeable, charismatic, and has many more commendable qualities you want in a coach, but also a human being. Mody is gentle, yet persistent, much like the Eastern winds, making Coach Mody a true professional through and through. This is a gentleman who you would want your daughter to bring to a family event. Mody has a value proposition that is one of one, and his greatness echoes the high standard set at Flight Performance and Fitness. Having Coach Mody as a staff member really speaks to the competitive advantage Flight has compared to other gyms, providing quality coaching tailored to the client. Every one on one coaching session with Coach Mody at Flight Performance and Fitness is like a dream wrapped in reality.
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Alex Pinck profile picture
Alex Pinck
September 19, 2025
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⭐️⭐️⭐️⭐️⭐️ After a long search and visits to countless gyms, the moment I walked into Flight Fitness I knew I had found my home. The atmosphere is welcoming yet serious, filled with people who are engaged, present, and committed. The professionalism, deep knowledge, and genuine willingness to help from every trainer blew me away. Add in their rock-star systems—the training app, the scheduling app, and the format of floor time, it’s clear they’ve built something truly special. Flight isn’t just a gym—it’s a community that challenges you and proves strength, vitality, and confidence can grow at any stage of life. If you’re searching for more than just a gym, if you want a place where professionalism, expertise, and genuine care meet inspiration and results—Flight Fitness is it.
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Aleksandra Parfenova profile picture
Aleksandra Parfenova
September 4, 2025
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I’ve been training at Flight for three months, and it’s been a wonderful experience! As someone fairly new to fitness, I really appreciate how professional, friendly, and supportive the coaches are. The small-group setup and individualized programs make it easy to learn, stay motivated, and see progress. Highly recommend!
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Sue Miller
July 24, 2025
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I have tried several gyms, and though I love getting out for runs and biking, I know I needed more to build strength as I get older! I've had an exceptional experience at Flight Performance and Fitness (13 Wall St, Waltham), and I can't recommend it enough. What truly sets this gym apart is the personalized approach to training. From day one, the staff took the time to understand my fitness goals, limitations, and preferences, creating a customized plan that feels both challenging and achievable. The trainers are not only knowledgeable but genuinely invested in your progress. They’re attentive, encouraging, and always ready to adapt your routine as your needs evolve. The environment is incredibly welcoming—whether you're a seasoned athlete or just beginning your fitness journey, you’ll feel right at home. It's rare to find a place that balances professionalism with such a strong sense of community. Flight Performance makes working out something I actually look forward to. If you're looking for expert guidance in a supportive and friendly setting, this is the place to be!
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Jacqueline Clark profile picture
Jacqueline Clark
July 24, 2025
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I love this gym! I don’t consider myself particularly athletic and wanted more guidance through personal training. I decided to sign up for the small group personal training and so happy I pushed myself out of my comfort zone. I’m greeted by the trainers with a high five and a smile; they’re all wonderful and help correct my form and guide me through everything. The other people who attend this gym are a variety of fitness levels and body types, so it’s not a “meat head” type gym where I feel self conscious or like I’m going to be judged. Everyone has been respectful and encouraging and for someone who doesn’t really like working out, I find myself really enjoying my time here :) also, the prices are very reasonable and in my opinion worth every penny

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