Team ECFIT

ECFIT would not exist without this outstanding group of individuals. Meet the team.


Erin Carson

Owner - Program Design - Trainer


A certified strength and conditioning specialist with over twenty years of experience. Erin Carson is the driving force of ECFIT. As Mirinda Carfrae’s, 2x triathlon world champion, strength coach since 2012, Erin has designed a system specifically for endurance athletes to attain the ability to train harder with a significantly reduced chance of injury. Some of the most recognized endurance coaches have grown to trust Erin and her team of strength coaches with their athletes.

Brian MacArthur

Social Media - Web Design - Trainer - Model


Brian is a NASM certified personal trainer and NASM performance enhancement specialist. He has personally worked with many olympians and world champions. Working on ECFIT's social media accounts, customer service, and assisting in the development of the programs keeps him busy. Brian is also a professional triathlete specializing in olympic & sprint distance ITU racing.

Corey Steimel

Technical Manager - Videographer


Corey has been involved with endurance athletics for over ten years. Specializing in triathlon and endurance running, Corey has coached beginner and intermediate triathletes and runners ranging from 5K to marathon, helping all of his athletes achieve personal records. Corey served in the US Marines, and is a retired sergeant and combat veteran, and has the training and experience to lead you to greatness.

Amy Quirion

Program design - Trainer - Model 

In 2008 Amy moved to Colorado to follow her aspirations of becoming a strength and conditioning coach. Being in the health and fitness industry, which is constantly evolving, has allowed Amy to follow one of her biggest passions, education. She specializes in functional movement for all levels, sport specific conditioning, weight loss, and endurance training. Her training style and individual based program design bridges new techniques with proven methodologies. Amy believes in the power of the body, and enjoys inspiring her clients to listen to their bodies and utilize them to their fullest potential. Amy grew up playing ice hockey and was selected for the USA Junior National festival four times, and went on to play Division I Hockey at the University of Maine. Since moving to Colorado, Amy has enjoyed the transition into endurance sports and triathlon.