AI hybrid coach · on your Garmin

Lift and run.
Same week.
Without the crash.

Strength and endurance in the same week, without one wrecking the other. It reads your Garmin, sequences your lifts and runs so they don't collide, and pushes every session to your watch — backing off before concurrent training buries you.

30 days free · no card · syncs to your watch in 60 seconds
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Your Custom Gains workout on a Garmin watch
How it works

Set up in 60 seconds.

StrengthRunCardioConditioningMobilityBuild muscle + endurance at once
01

Connect your Garmin

One tap links your watch. It reads your runs, your lifts and your recovery — the whole picture, not just cardio.

02

Say what you want

"Squat more and run a sub-25 5K." "Stay strong while marathon training." It holds both goals at once and plans around the tension.

03

Your week, sequenced right

Lifts and runs land on your Garmin in the order that protects both — hard legs day away from your key run, so neither session steals the other's gains.

See it

You talk. It lands on your wrist.

01

Tell it your goal

A real conversation — it asks, you answer, it builds the plan.

app.customgains.fit
Custom Gains coach building a hybrid plan in chat
02

It's on your Garmin

Every session syncs to your watch, structured and ready to follow.

connect.garmin.com
Custom Gains workouts synced into Garmin Connect
Why it works when the others didn't

One plan. No guesswork.

"My runs kill
my lifts."
It manages the interference effect — spacing your hard runs and heavy lifts so endurance work doesn't blunt strength and lifting doesn't leave your legs dead for the run.
"I don't know
how to combine them."
You don't have to. Tell it both goals and it sequences the whole week — which day lifts, which day runs, how hard each one goes — in plain English, pushed to your wrist.
"I'm always
smashed."
Two hard modalities means double the fatigue. It reads your sleep and HRV and pulls volume before you overreach — so you keep both the muscle and the miles.
A real week

What a hybrid week looks like.

A sample — yours is built from your Garmin history and rewritten every week around what you actually did.

Mon
Lower strength — squat + posterior chain, pushed as a Garmin strength workout
Tue
Easy Zone-2 run — kept genuinely easy so it doesn't tax tomorrow
Wed
Upper strength — away from run days on purpose
Thu
Intervals — the week's hard run, legs fresh from Wed
Fri
Rest or mobility — auto-inserted when recovery dips
Sat
Full-body strength + short conditioning finisher
Sun
Long easy run — capped so Monday's squats still fire
Pricing

Start free. Then less than a coffee a week.

30 days free, no credit card. A real coach costs $150+/month — this is a fraction of that, and it never sleeps.

Founding member
Founder
$9/mo
Locked at $9/mo forever. First 100 members only — limited spots.
Start free
Annual
$149/yr
That's ~$12/mo — save about 35% vs monthly.
Start free
Monthly
$19/mo
Full access. Cancel anytime, in two taps.
Start free
Questions

Good to know.

Can it really program strength AND running?

Yes — that's what it's built for. It writes both, sequences them so they don't fight each other, and pushes the lifts (as structured strength workouts) and the runs to your Garmin.

What's the 'interference effect'?

Doing lots of endurance and strength together can blunt each other's gains if you stack them wrong. The coach spaces and orders your week to minimise that, so you build muscle and aerobic fitness at the same time.

Is this for HYROX / functional fitness too?

It works for any strength-plus-endurance goal. For race-specific HYROX prep, see the HYROX plan — but a general hybrid build lives here.

Just show up.
We'll handle the rest.

Build my plan — free
30 days free · no card · cancel in two taps