A new Box for Frankfurt, Opening in March 2026
We’re building the box.
You’re building strength, skills, and confidence.
Become a MainBox founding member
Become a founding member: help shape the box and lock in a launch discount. Build it with us from day one.
Learn more
Find out more about the location
Discover where we are, what the box offers, and how training, community, and everyday life come together.
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Sign up for launch news
Join our newsletter to stay updated on latest developments. Just register your contact data in Octiv, our gym software.
Register here
Welcome to MainBox
We’re building more than a place to train. We’re creating a space for precise coaching, training that fits into everyday life, and a community that supports and motivates. Opening a new box is the realisation of a dream for us — and an invitation to you.
You can be part of it from the very beginning: experience progress, shape the culture, and help build this place with us — step by step, rep by rep.
Berkin & Chris
Our mission: We help people get stronger, healthier, and more confident by coaching CrossFit the right way, cultivating an uplifting community, and making training fit into everyday life.
