About Threshold

Threshold is a HYROX and hybrid training app. You tell it your race, your division, your goal time, your lifts, the days you can train and the kit you own; it writes a periodised season backwards from race day and re-plans it when any of that changes.

The method

The programming is not improvised. It encodes two books: Tactical Barbell’s strength templates (fixed lift days, a percentage wave that climbs through a block, a de-load before the next) and Alex Viada’s The Hybrid Athlete (build the aerobic base first, keep lifting every week, and let race-specificity rise as the event approaches). What those books leave to the coach — how long each block should be for your date, which station gets the extra work, when the race simulation goes, how the taper keeps a race-load touch — the engine decides from rules you can read in our HYROX training guide.

Every plan is deterministic: the same athlete, the same answers, the same season — no randomness, no model guessing. That is what lets us check it the way a coach would read it. Before a change ships, a panel of several hundred athlete profiles across race dates, training days and divisions is composed end to end and held to the rules a coach holds a season to: every block progresses, a threshold run every week of Build and Peak, no heavy legs the day before a quality run, a race-load opener a week out, simulations spaced, and de-loads that stay one week.

Tested on a race

The app was built by an athlete who races it. The race footage and station photography on this site are from HYROX Mumbai, September 2026, where the plan it generated was run in full — and where the gaps it found afterwards became the next release.

What it is not

Threshold is not affiliated with or endorsed by HYROX; HYROX is a trademark of HYROX World GmbH. It is not a coach in your corner on race day, and it does not replace a medical opinion. It is a plan that knows you, checks itself, and changes when your life does.