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Nicole Rubenstein, MS, RDN, CSSD, CDCES
Owner and founding dietitian

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About Nicole

My interest in nutrition started long before I became a Registered Dietitian-Nutritionist. Growing up I was a snowboard racer on the U.S. Junior National Team and traveled the world to compete. I realized the importance of proper fueling during these years, so when I left racing in 2001 I shifted my focus to my next passion, nutrition and helping others. My career began in 2006 after completing my B.S. in Nutrition from Cornell University and my dietetic internship at New York Presbyterian. My foundation was diverse, working in a variety of clinical nutrition settings, a top sports nutrition practice in Manhattan, and running a private practice on Long Island. I relocated to Colorado in 2010 to continue my career and advance my skills as a sports dietitian. I enjoy working with complex sport nutrition cases (athletes with medical conditions) as well as recreational and elite athletes looking to improve performance or change body composition. I enjoy my free-time mountain biking, snowboarding, cooking, and relaxing with my two dogs, Sol and Woody. I love planning my own sport nutrition too, which has been essential for strength and conditioning to stay strong and healthy during mountain bike season.

Education and Credentials


Board certified sports dietititian nutritionist
  • Registered Dietitian for 17 years working in private practice and clinical nutrition settings

  • Extensive work with athletes who have type 1 diabetes 

  • Individual counseling, team counseling, and body composition testing with the following athletic groups: professional snowboarders, U.S. Speed Skating Team, cyclists, runners, triathletes, weight lifters, and Ironman athletes, among other sports

  • Counseling athletes with celiac disease, gastrointestinal disorders, and those who follow vegan diets and other dietary patterns

  • Extensive work with a variety of health conditions including diabetes, bariatric surgery, endocrine disorders, gastrointestinal conditions, and weight management

Media & Industry
  • Featured as a nutrition expert for Fox 31, KOA News Radio, 9NEWS, Denver Post, and Everyday Health

  • Nutrition author for Type 2 Nation and Insulin Nation

  • Presented live sports nutrition segments for the Colfax Marathon in Denver, CO every year from 2015-2019

  • Contributing writer for My Net Diary

  • Conference speaker at JDRF, American Diabetes Association, and the American Liver Foundation events

  • Reviewer for the Journal of the Academy of Nutrition and Dietetics

  • Keeper of the Shred mountain bike video series

Nicole Rubenstein, Registered Dietitian Nutritionist, Certified Sports Dietitian Nutritionist, Certified Diabetes Educator
Nutrition for skiing and snowboarding

Jacque Maldonado, MS, RDN

Jacque Maldonado, Registered Dietitian and Sports Nutritionist, US Masters Swim Coach, Certified Diabtes Educator, and Certified Ski Instructor
Ironman sports nutritionist, Ironman sports dietitian
About Jacque

As a life-long athlete I am a firm believer that nutrition can make or break an athlete’s ability to meet their goals.  I started swimming competitively at age 6 and essentially grew up in a swimming pool.  Skiing, hiking, cycling and tennis where also part of my early life.  After earning a B.S. and M.S. in Nutrition, I got hooked on running marathons and completed 26 of them, including qualifying for Boston.  In my 40s I started racing Ironman triathlons and completed 5 Full Ironmans and a dozen Half Ironmans (7 times on the podium).  I've also finished ultra runs (50k) and cycling events (Double Triple Bypass). Now in my 50s I'm enjoying Xterra Triathlons and understanding the unique needs of ‘Masters Athletes’.  I live in Summit County, CO and teach skiing, coach swimming and work from home as a Sports Dietitian-Nutritionist.  My passions include adventure travel, dog rescue work, and to be outside enjoying the sports I love.  My husband and I then relax at home with our three pugs.

Education and Credentials
  • Bachelor’s degree in Nutrition, Colorado State University, 1989

  • Master’s degree in Nutrition, University of New Haven, 2000

  • Dietetic Internship, Yale New Haven Hospital, 1991

  • Certified Specialist in Sports Dietetics (CSSD), 2014 – 2019

  • Certified Diabetes Educator (CDE),  1995 – 2020

  • Certified Ski Instructor (PSIA) - Level 2, 2016 – present

  • Certified Triathlon Coach - Level 1, 2012 – 2017

  • Certified US Masters Swimming Coach - Level 2, 2016 – present

  • Registered Dietitian for 30 years in clinical, wellness, and athletic settings

  • Sports Dietitian Nutritionist, working with triathletes, runners, cyclists, backpackers, climbers and weekend warriors

  • Certified Coach, developing training plans for athletes in: Triathlon, Swimming, Skiing

  • Extensive training and experience with weight loss, weight gain and maintenance

  • Extensive training and experience with type 2 diabetes and Medical Nutrition Therapy

  • Author of sports nutrition and training articles for the Colfax Marathon official website, 2011– 2014

  • Appeared on 9NEWS to discuss nutrition for running a marathon prior to the Colfax Marathon

Brandon Nichols, RDN

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About Brandon


I became a Registered Dietitian in 1999, but my interest in nutrition started much earlier from a dedication to track and cross country in high school, then body building for much of my 20s.  I studied kinesiology and nutrition in college graduating  with dual degrees in Nutrition and Exercise Science.  My knowledge of sports nutrition took off when I became the Training Table Coordinator for Kansas State University football, basketball, volleyball and baseball teams.  When I turned 30 I found triathlon and traded in my love of the weight room for endurance sports.  I became very interested in proper training and fueling for the demanding sport of triathlon.  While I never excelled at many sports when I was younger, having this nutrition edge as an adult helped me get to the podium in most of my sprint, olympic and half-iron distance events.  I continued to build my sport performance focus by getting Board Certified as a Specialist in Sports Dietetics and USAT Certified as a Coach.  As things evolved with lifestyle and my desire to continue learning new skills, I took up mountain biking and focused on 12 and 24 mountain biking events for the last 4 years.  I am currently coaching the local high school mountain bike team and providing nutrition guidance for these young athletes.  I also work as a renal dietitian and understand clinical nutrition for kidney failure, diabetes, obesity, and metabolic disease in general. 


Education and Credentials


  • B.S., Foods and Nutrition, Kansas State University, 1996

  • B.S., Exercise Science, Kansas State University, 1996

  • Coordinated Program in Dietetics, Kansas State University, 1997

  • Certified Specialist in Sports Dietetics (CSSD), 2006-2021

  • USA Triathlon Level I Certified Coach, 2012-2021

  • NICA/ACA Certified Coach, Buena Mountain Bike Team, 2017-present

  • USA Triathlon Certified Race Director, 2020-present




  • Registered Dietitian for 23 years in clinical, wellness, and athletic settings

  • Sports Dietitian, working with triathletes, road and mountain cyclists, rock climbers, D1 NCAA teams, minor league hockey teams, swimmers, body builders, dancers, youth teams

  • Certified Coach training with and developing training plans for triathletes, road cyclists, and mountain bikers

  • Trained in Motivational Interviewing for client and patient centered counseling 

  • 11 years of experience working in the clinical fields of acute care, long term care, dialysis, home infusion and Medical Nutrition Therapy

Jackie Atwater, MS, RDN, NSCA-CPT


About Jackie


Growing up I was a competitive soccer player and dancer for many years. With the dreams of one day becoming a professional dancer, I began my undergraduate degree as a dance major at Pace University in NYC. I soon realized there was a huge gap in knowledge and support regarding nutrition for athletes, and here is where my interest in the field of nutrition began. Recognizing that one day I wanted to work with athletes, I completed my undergraduate degree in Exercise Science from Elon University. During this time, I also obtained my certification in personal training. Prior to starting my Master’s degree, I worked as a personal trainer for a wide variety of clients (pre- and post-op bariatric, diabetes, stroke, high school athletes, college athletes, and more) and began to train and compete in powerlifting. I then went on to complete my Master’s degree in nutrition at Boston University and my dietetic internship at Boston Medical Center. I am currently the Assistant Performance Dietitian at Florida State University where I primarily work with the Olympic sport athletes. My approach when working with athletes is to provide evidence-based practices in a client-centered manner. I strive to collaborate with clients so that we can find the approach that works best for you and your lifestyle. 


Education and Credentials

  • Bachelor’s degree in Exercise Science, Elon University, 2016

  • Master’s degree in Nutrition, Boston University, 2020

  • Dietetic Internship, Boston Medical Center

  • Certified Personal Trainer (NSCA-CPT), 2015-present

  • Member of CPSDA



  • Experience working with strength and weight-class athletes, collegiate track and field, performance artists, Olympic sport athletes, and high school athletes

  • Experience working with athletes with body recompositioning, weight gain, and weight loss goals

  • Specially trained in eating disorders

Sarah Sullivan, RDN


About Sarah


My athletic pursuits started young, competing as a hunter/jumper equestrian rider through my elementary to high school years. This spurred my love for competition which carried through to running cross country in high school, competing in several half Ironmans and triathlons in college, and racing as a cat 2 road cyclist.  I grew up skiing and continue to enjoy both downhill and backcountry touring in my adult life. My more recent athletic focuses have been around XC mountain bike racing. In my pursuit for the podium and enjoying grand outdoor adventures, it became apparent that sports nutrition strategy is key to maximizing success. I began my studies in dietetics at the University of Arizona in 2014. I completed my Dietetic Internship in 2017 and worked in the clinical setting learning about various disease states. In 2019, I made my transition to the outpatient setting working in bariatric surgery, where I continue to practice part time today. I also completed my Bachelors in Science at Northeastern University in Psychology which provides me with unique qualities to offer an empathetic and holistic coaching approach. As a passionate cyclist, skier, runner and climber I understand the unique needs of an athlete. My goal is to help support your athletic pursuits by coaching you on how to properly fuel and achieve your goals.


Education and Credentials

  • B.S. Psychology Northeastern University, 2013

  • B.S Nutrition and Dietetics University of Arizona, 2016

  • Dietetic Internship at St. Mary’s Hospital in Tucson, Arizona, 2017

  • Member of CSPDA


  • Seasoned athlete and dietitian specializing in sports nutrition for triathletes, runners, cyclists, skiers, and climbers 

  • Additional specialities include weight loss, metabolic diseases, bariatric surgery, and diabetes

Racer's Edge Nutrition Partners and Recommended Providers

Multisport Coaching

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Cycling-specific coaching

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Physical Therapy & Strength and Conditioning

Atlas S & C.PNG

Bike shops

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