A hybrid training app for strength & endurance athletes
One app. Strength, running, and engine work in one adaptive plan.
By James Whitfield — Head Coach, Threshold
HYROX competitor · Hybrid training coach · 10 years programming strength and endurance athletes
Most athletes run two or three separate programmes and hope they don't cancel each other out. Threshold builds one plan that knows what you lifted yesterday before it tells you what to run today.
Why most hybrid training fails
Running plans ignore the gym. Strength plans ignore the roads. Neither accounts for the fatigue the other creates.
The result is always the same — you either sacrifice strength to hit your mileage, or you skip runs to protect your lifts.
A real hybrid training app has to see both sides at once. Threshold does.
What a real hybrid training app looks like
Adaptive by default.
Every session responds to your readiness, your schedule, and what you did yesterday. No more copy-pasting a spreadsheet and hoping it fits.
Strength stays on the plan.
Two lifting days that never get sacrificed for extra mileage. Your deadlift progresses while your engine grows.
Engine work that builds.
Coached aerobic and threshold sessions programmed around your strength load — not bolted on as an afterthought.
Built for HYROX and beyond.
Whether you are racing HYROX, training for an obstacle event, or just want to be strong and fit at the same time — the plan adapts to your goal.
Who Threshold is built for
Threshold is not a running app with some weights added. It is not a strength programme with a cardio finisher. It is built specifically for athletes who do both seriously.
The HYROX athlete who needs to lift heavy and run fast on the same week without one destroying the other.
The gym regular who wants to build real cardiovascular fitness without losing the strength they have spent years building.
The runner who knows their upper body and posterior chain are holding them back and wants to fix it without overtraining.
How the hybrid training app works
- 01
Tell Threshold your goal, your schedule, and your current fitness levels.
- 02
It builds your first week — strength, running, and engine sessions balanced around each other.
- 03
Every morning, check in with your readiness. The plan adjusts before you start.
- 04
As you improve, the plan progresses automatically. No manual periodisation required.
Training for HYROX? Threshold is built for that.
HYROX is the clearest test of hybrid fitness — eight stations of functional work broken up by eight runs. You cannot fake it with strength alone or cardio alone. You need both, and you need them to work together under fatigue.
Threshold programmes the strength base that makes HYROX stations cheap, the running volume that keeps your pace honest, and the compromised running work that bridges the two. Read the full HYROX training guide if you want to go deeper.
Frequently asked questions
What is a hybrid training app?
A hybrid training app is one that programmes both strength and endurance work in a single integrated plan, accounting for the fatigue each creates on the other. Most fitness apps handle one or the other. Threshold handles both.
Is Threshold free?
Threshold is free to download on iOS. The core adaptive plan is available on the free tier. Advanced features are available on the premium plan.
Does the app work for beginners?
Yes. Threshold asks about your current fitness level during onboarding and builds a plan that meets you where you are. The plan scales as you improve.
Is Threshold only for HYROX athletes?
No. Threshold is built for any athlete who trains both strength and endurance seriously — HYROX competitors, obstacle racers, runners who lift, and gym athletes who want a real engine.
Train like it knows you.
Now on iPhone and Android. Download Threshold and start training today.