Sonic Endurance
Personalized Training
Unlock Your Potential
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Sonic Endurance is dedicated to helping athletes of all abilities achieve their endurance goals. We understand that no two athletes are alike and the response to training is an individual process. We regularly incorporate field-based testing and functional movement testing in order to assess an athlete’s progress towards their goals. It is our mission to develop a plan that uses your training time efficiently while preparing you to accomplish or exceed your goals.
Sonic Endurance
Personalized Training
Unlock Your Potential
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It all begins with culture—and Sonic’s culture stands above the rest. Coaches and athletes unite as a team, supporting one another through training, overcoming challenges, and pursuing personal goals. At the heart of Sonic’s success are acceptance, mutual respect, and a deep appreciation for each athlete’s individuality. The coaches are not only highly knowledgeable but also genuinely invested in helping you achieve your goals.
Through strategic partnerships with athletic trainers, physical and occupational therapists, training camps and trusted vendors, Sonic ensures every aspect of your training experience is optimized for your success.
At Sonic, every finish line marks a victory over your personal limits.
I signed up with a Sonic coach to improve personally as a triathlete, and almost immediately I started training smarter. I was working harder in many sessions, but I was also less tired overall at the end of the week. I was meeting my primary goal of sustainable fitness for years to come, and as a nice bonus my race times improved dramatically!
But more importantly what I have gained from Sonic, which I didn't know I needed, is a culture of community and support. This is a team focused on affirming each others' wins no matter what they look like, providing support through successes and challenges, and generally bringing a positive attitude to endurance sports. I came for myself, but I'm now proud to be a part of this team team!
My Journey all start in the summer of 2021 when I found myself unhappy with my current fitness level. I had not seen a gym in roughly 10 years, or even attempted any type of cardio workout. I set my goals a bit high without really knowing what I was getting myself into. I registered for my first full Ironman in Lake Placid! In this process I found Sonic Endurance and started working with Maribeth. One of my first times meeting Maribeth, was also my first time EVER swimming in a lap pool, and it showed! Maribeth evaluated my skill level, and spent countless hours teaching me how to swim, while improving my technique and endurance. Swimming was my absolute biggest challenge of the three disciplines. Maribeth was always available for encouragement, support and a good laugh throughout my journey. Working with Maribeth not only kept me accountable, but without her, my goals would not have been met. From Swimming, biking, running to fueling properly for races, Maribeth was there every step of the way. I have continued to work with her as my Endurance coach now for 4 years and have never felt more accomplished in my endurance goals! Working with Maribeth and Sonic has given me some of the best years of my life, the value of working with Maribeth one on one is priceless. Forever grateful!
Joining the Sonic Endurance team and being a 1 on 1 coached athlete has been a life changing experience. I achieved goals I never even dreamed of, including my first full Ironman finish. Coach Stacey gave me the confidence to sign up for Ironman Lake Placid and with her guidance, I never once thought I would not finish. On top of that, the Sonic team has literally become some of my closest friends and chosen family.
Sonic Endurance is more than a coaching company.
Sonic Endurance is a collection of like-minded individuals
We’re Endurance Coaches – and we are athletes. We like to get our hands dirty. We train, we race, we fail, and we succeed. We understand what you experience throughout your seasons of training and racing because we are right there beside you, on the same journey.
Through years of training, racing, and coaching, we’ve learned our athletes benefit most from a team approach. We each bring something different to the table and want you to benefit from each perspective. You’ll have your 1-on-1 coach, combined with the knowledge, experience, and expertise of all our coaches. Together, we bring our passion for triathlon to coaching in support of your goals and behind the process of uncovering your potential.
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Sonic Endurance
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Coach Debra
It took me a while but I found my calling in teaching. I have been teaching in one form of another since 2004, whether it is teaching physical activity, or in an academic setting. Coaching to me is another form of teaching. I am teaching my athletes how to meet their goals. Which is the other reason I coach. I love to set goals and help individuals..
Coach Jen
My number one motivation in coaching is to help my athletes achieve their goals. Often these goals are big and scary and beyond what they thought was possible. There is absolutely no better feeling than getting that text that they nailed their key race, or being on the course when they accomplish something huge. It’s incredibly rewarding.
Coach Laura
I get such a sense of joy seeing my athletes achieve things that they once thought were out of reach. It is amazing to me to watch the development not only in their technical skills and endurance abilities, but also to see their confidence take shape. I am grateful to each one of my athletes for allowing me to be a part of their journey.
The Intersection of Community and Sport
When I moved to North Penn school district 6 years ago I only knew a few people, Stacey Miller being one of them. I was 9 months pregnant and had no idea I was about to hit the jackpot when it came to raising my kids in this community. I had been a triathlete since 2010, completely obsessed with all things endurance related and becoming a mom didn’t change that. After I had my son Jack, I signed up for Lake Placid Ironman with a goal to finish before he turned one years old. Covid happened, and a ton changed, including that race being cancelled. That extra year lead me to becoming a Sonic Athlete, and really starting to see what Stacey and the team was all about. I saw posts and started hearing locally of a kids triathlon at North Penn High School. Of course rehash sparked my interest because Jack was almost 2 and running and riding along with me in the stroller and bike chariot. He was starting to get it, and I kept paying attention to the IronKnights. I can’t remember how I ended up at a Parents Support Group meeting, but I am forever grateful I took the leap and got involved even before my kids entered the school district. Iron Knights triathlon is a single day race where kids in K-6th grade complete a swim, bike and run. The distances increase as the kids get older, and since around 2000 kids register, the time of day they start the race changes as they get older. There are 13 elementary schools in North Penn, and each physical ed department get the kids involved, excited and encourages their school to sign up for the race. Registration is for North Penn K-6th graders only, and the race is put on by the school district, at the North Penn High School. The Iron Knights Parent Support Group was started 13 years ago when the race began as a way for the parents to support the event. Meetings begin in October to start the planning for the race in May. The first few meetings I sat back and absorbed all the different committees, race day questions and feedback, parking logistics and fundraising efforts they undertake. There is a representative from the phys ed department there to update everyone on the race side of things, and the parent volunteers collaborate with him to make sure they feel supported as well as discuss what items they can raise funds for to enhance the race day experience. The most impressive thing this group has done is raise money over the years to support kids entry into the race. The IKPSG has a scholarship committee that covers race entry, swim suit and goggles, running sneakers. They also work to get bikes and new helmets donated so those kids can have everything they need to participate in the event. I personally have assisted in organizing helmet donations and volunteering at scholarship nights and it is one of the most rewarding experiences I have been a part of. Another way the IKPSG raises money is through merchandise sales, and the last 2 years I was able to be the merchandise chair and coordinate the swag, race day shirts, and volunteer shirts for race day. There is a storage unit we use to store some of the merch, bike donations, water bottles, race day equipment and more that is maintained by this group. Outside of the parents support group, Sonic Endurance runs a 6 week training program 3 nights per week that kids can register for. We receive permits from 3 elementary schools and have K-2 and 3-6 on separate nights to train for the race. The kids learn the rules of the triathlon, bicycle safety, how to transition, play lots of running games and we even get the big kids out on the roads to build endurance. It is incredible to see how far these kids come in just 6 weeks with their running endurance to their bike handling skills to getting many off training wheels and riding their bikes freely. We have seen little siblings go from the sidelines to the practices, and tiny triathletes move up to the older kid group. We have also welcomed back kids in middle school and high school who were former Iron Knights and want to give back to the program. They help us bike and run with the current kids, and total win for all. The week before the race we host one big practice with all 3 groups, around 100 kids, and have our final push to get them ready to race! My son Jack has been coming to these practices since he was 2 to watch mom coach the big kids. The way that he naturally observed everything and wanted to start riding bikes and run with mom has been so incredible for me as a parent. He started participating in practices last year and this year he will officially take on his first Iron Knights triathlon as a kindergartener! Thanks to Iron Knights being such an exciting and successful event in our community, so many kids have been able to enjoy swimming, biking, running, being outside, friendly competition with their peers, and to be a part of something so foundational as they grow. Race day is Saturday May 17th where all 2000 kids with their families, friends and teachers will come together to complete in the race. This large scale operation is made possible by the school districts faculty and the volunteers who give up a weekend to help these kids become triathletes. I encourage anyone local to North Penn to give a few hours to these kids, and be a part of something so unique and so magical, you might just be inspired yourself to get out there! Stay tuned for the moment I have been waiting for as an “Iron Mo
What Brings You Joy?
Fast forward through many years of internal discussions and struggles in my own head and I came to the conclusion that I needed some time to do the things that reminded me of the joy sports had always brought me but was so hard to find recentl
Strength Training Surprise
I went back to the basics and got into the gym. For me, this was the best place to start. Yes, the swim, bike, and run would come, but I knew that I needed to build some strength first. I am my own worst critic when it comes to my performance