Running Coach

What We’re All About

As a professional Running Coach, I have become well-known and respected throughout the greater NYC area. I recently expanded my business into the virtual coaching space, coaching runners online throughout the world. After training with some of the world's greatest athletes, I developed my own unique and effective teaching methods. I focus on getting your body and mind focused on the game and prepare you to become your best self with my coaching offerings.

Hi Guys! My name’s Alli Felsenthal, and I’m 31 years old. I’m a native New Yorker born in Manhattan, NY and raised in Chappaqua, NY (not too far north of the city!). I started blogging in 2014 on my Instagram account @runwithalli as a hobby, which has now prospered into my business: RUNWITHALLI, LLC Coaching.


I entered the fitness world initially in my earlier years as a swimmer. This now led to my current passion for endurance training and coaching runners. My coaching journey began with my first marathon. The 2015 NYC Marathon, finishing with a time of 3 hours and 48 minutes. I knew I not only had a gift but a new passion; Marathon is running. Shortly after, I tracked to Los Angeles, took 14 minutes off my time, and missed The Boston Marathon qualifying time by 50 seconds. Of course, you could’ve guessed what comes next! I flew to San Diego with my mom (the last race there was to qualify for the Boston), and I did it, finishing with my PR of 3 hours, 21 minutes, and 41 seconds. Now, many of you might think that Marathon runners believe they know it all (like I once did!),  but there’s SO much more to just running that makes a dedicated Marathon runner a good one. Here’s my story.


Shortly after I ran the Boston Marathon, I thought to myself, “what next?” and still pondered that thought. I knew I had to do something other than just run, so I joined a gym, Equinox. The membership advisor tried to sell me on personal training, and I almost laughed in her face thinking I was too good for that and knew how to train myself properly. Jokingly, after discussing my weaknesses and my needs for strength training, I gave in and agreed to the free session offered by the gym and said, “just find me a cute trainer!” In case you’re wondering, she did not let me down! During the free guided session a few days after the Equifit, I was sold on personal training. 


Through a series of guided programs throughout my training with my trainer, I not only gained confidence in the gym, but I learned such a significant amount of knowledge about the different machines, how to use them, what to use them for and how they helped me as a Marathon runner strengthen the proper areas needed to prevent any injuries. I have to admit; I wasn’t a comfortable client, but more so an entertainment box. Still, my trainer spent hours researching and teaching himself how to train an elite runner, not having the skillset or background of doing so but was up for the challenge anyway. Nevertheless, as a result, each session allowed me to learn so many ways to strengthen different parts of my body on my own through various exercises, uses of equipment, and movements; I was mind blown. 


After some time, I found myself inspired by my trainer's dedication and hard work to change my life as an athlete and a person. It gave me some time to think and reflect over several months, and I finally had an epiphany. I wanted to be a personal trainer too.


Fast forward several months, and I took a complete career change going from a 9-5 corporate digital advertising career in personal training based at Equinox Rockefeller Center. I felt like my passion for fitness and changing individuals' lives every day was something I wanted to do for not just a living but a career. I wanted to make people understand that fitness is a lifestyle, not just something you do to work out like I was taught. 


Today, I am the Founder and CEO of RUNWITHALLI®, LLC Coaching. Our mission is to empower our clients with the personalized guidance and customization they need to feel like their healthiest and best selves through functional fitness and running. Whether you have goals to lose weight, build endurance, or run your first 5K to a Marathon, I provide you with turnkey solutions and communication aligned with your lifestyle goals and needs.

I help you stay running happy ® through your buy life, using my systematic programming and curated cross-training solutions that are flexible with what you need and when you need it.

I welcome you to my new coaching platform and hope to help you find your healthiest mental and physically self by working with you as your life coach, your accountability coach, your running coach, and your friend to see what it is that you need to allow you to live your best life for you.  RUNWITHALLI® , LLC Coaching brings something for everyone and everything for you. 


Thank you for joining my community! I'm so happy you've stumbled across my website. You won't regret it!


Coach Alli

CEO & Founder, RUNWITHALLI® , LLC Coaching

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