CrossFit Thalwil

"Fun, teamwork, and confidence” Our classes inspire a love of movement while building skills and joy in every child. BOOK A FREE TRIAL!

Bönicenter Thalwil, Bönirainstrasse 4, , CH-8800 Thalwil, +41 79 952 35 65

Terrain Christie

The owner of CrossFit Thalwil, Terrain’s journey started in Montego Bay, Jamaica, before moving to New York at age six, where his love for sports took off. From football, basketball, and track & field to weightlifting and functional fitness, his athletic background shaped the coach he is today.
A CrossFit Level 2 Coach (working toward Level 3!), athletic trainer, and certified nutrition coach, Terrain brings experience, energy, and passion to every class. His expertise spans personal training, group coaching, and sports education, helping athletes of all levels build strength, confidence, and resilience.
In Switzerland, Terrain has expanded his coaching to include youth sports development, working with kids to improve confidence, manage anxiety, and build a strong athletic foundation. Whether he’s coaching adults or kids, his goal is the same: helping people unlock their full potential through fitness.

Anna Niesler

My name is Anna Niesler. I am a physical education teacher with a master's degree. I graduated from the Academy of Physical Education in Poland. I used to train volleyball. I worked as a swimming and skiing instructor, and primary school teacher in Poland. My hobbies are ski touring, climbing and hiking. I have a 4.5-year-old son. Our entire family lives in Thalwil.