What Is ATHX?

ATHX (pronounced “Ath-X”) is an adidas-backed competition format in functional fitness. You move through strength, endurance and metabolic zones, with planned refueling and recovery breaks.

History and Development

The first events took place in the UK in 2023. ATHX subsequently expanded into continental Europe, including events in 2025.

Structure and Schedule

A structured multi-event competition lasting around 2–3 hours in total.
Strength Zone: heavy, strength-focused tasks.
Endurance Zone: cardio-focused workouts.
Metabolic Zone (MetCon): a high-intensity finish.
Refuel and Recovery: scheduled breaks.
Current divisions: LITE, ATHX and PRO. ATHX and PRO offer individual and pairs entries; LITE is for pairs.

Who It Is For

Options for different experience levels, from beginners to experienced competitors, within a clearly structured event.
Performance across defined sections, with an all-round fitness challenge.

How It Compares

HYROX: varied tasks within zones instead of a fixed eight-run, eight-station course.
CrossFit: a more scheduled structure with less emphasis on surprise.
iF3: a commercial event rather than a federation competition format.
GRID: a multi-event format, including pairs, rather than a team sprint league.

Popular ATHX Equipment

Sources:

#

A

B

C

F

H

I

O

P

R

S

T

V

W