Tess Mattern   Fueled Nutrition and Fitness


New Zealand


English, Dutch

Sport Types

Triathlon, Road Cycling, Running, Duathlon, IRONMAN, XTERRA, Swimming, Personal Training

Preferred Athlete Levels

Beginner, Intermediate, Advanced, Professional


I'm Tess, and I am currently living and coaching in Arrowtown, New Zealand. I coach clients in the U.S. and New Zealand, and coach a wide range of ages and abilities.
I have a nutrition and swim background, but have been coaching Triathlon since 2013. I like to take a holistic approach with people I coach, and ensure that they are treated as the full human they are. I am passionate about making and maintaining a strong connection with each person I coach.

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I grew up as a competitive swimmer and swam through my years at University. I had a successful career as a swimmer, and wanted to continue competing in sport. I turned to triathlon after graduating from Emory University in 2009, and casually began participating in local races.
While working as a swim coach for a youth swim team, I got certified in personal training, and then transitioned to working as a personal trainer full-time. After 2 years of working in a gym, I decided to go back to school for Nutrition and moved to Colorado to complete a 2-year Holistic Nutrition program.
While living in Colorado, I began coaching for the Colorado State Triathlon team, and my focus shifted to triathlon.
In 2019 I moved to New Zealand, and shortly after began coaching for the Canterbury Triathlon Academy. This squad is for junior athletes aged 14-23 who have big dreams of working towards the Olympic pathway. My role in this squad shifted from coach to director in October of 2020 as I moved away from Christchurch and wasn't able to conduct in-person coaching daily. I am still coaching clients in the US, and plan to continue growing my business both in NZ and in the US.


1-on-1 Coaching, Consultations, Local Coaching, Remote Coaching, Strength Training, Nutrition, Mental Skills, Run Analysis, Swim Analysis



New Zealand