AI-Powered Training

Create Workouts with Plain English

Tell your AI assistant what you want to train, and we'll build the workout and sync it to your device. No more manual entry — just describe it and go.

🔜 Intervals.icu
🔜 Garmin Connect
Possibilities
Claude Desktop

Create a 90 minute endurance ride for Saturday with 3x10 min sweet spot intervals

I've created your workout and synced it to Intervals.icu:

🚴 Cycling 90 min
15min Z2
10min SS
5min Z1
10min SS
5min Z1
10min SS
35min Z2

✓ Synced to Intervals.icu

Your Personal AI Coach

Threshold Coaching connects your AI assistant directly to your training platforms. Describe workouts in plain text and they'll appear on your calendar, ready to sync to your device.

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Natural Language

No complex interfaces. Just tell Claude or ChatGPT what you want: "Easy 45 minute recovery run" or "VO2 max intervals, 5x3 minutes"

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Instant Sync

Workouts are created and synced immediately to Intervals.icu. From there, they push to your Garmin, Wahoo, or other devices.

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Context Aware

Your AI knows your zones, your schedule, and your goals. Ask for a workout and it considers your full training context.

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Analyze & Adjust

Review past workouts, check your training load, and ask your AI to adjust plans based on how you're feeling.

Coming Soon

We're building integrations with your favorite AI assistants. Join the waitlist to be notified when we launch.

Coming Soon

Claude Desktop

Works with Claude Desktop app on macOS and Windows.

Coming Soon

ChatGPT

Use with ChatGPT Plus or Team via custom GPTs.

Training That Fits Your Life

Beyond workout creation — a complete training ecosystem powered by your data.

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Calendar Integration

Connect your calendar and we'll automatically schedule workouts around your meetings, travel, and life commitments.

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Auto-Adjusting Plans

Missed a workout? Crushed your intervals? Your plan adapts based on your actual performance and recovery.

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Running & Cycling

Specialized training for both disciplines. Structured workouts with precise targets for pace, power, and heart rate.

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Deep Analytics

Track training load, fatigue, form, and performance trends. Ask your AI to explain what the numbers mean.

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Goal-Oriented

Tell your AI your goal and timeline. It'll build a periodized plan that peaks you at the right time.

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Device Sync

Workouts flow from Intervals.icu to your Garmin, Wahoo, or other devices automatically.

Advanced Physiological Metrics

Take your training to the next level with lab-quality insights. No more guessing your zones.

Lactate Testing

Know Your True Thresholds

Enter your lactate measurements from step tests and we'll calculate your precise training zones. Track LT1, LT2, and see how your thresholds improve over time.

  • Input mmol/L values from finger prick tests
  • Automatic zone calculation (5-zone or 7-zone models)
  • Track threshold progression over training blocks
  • Correlate with heart rate and power/pace
Lactate Curve
LT1 LT2 Max
Power / Pace →
mmol/L
VO2 Max Analysis

Understand Your Engine

Input your VO2 max test results and we'll translate them into actionable training zones and paces. See how your aerobic capacity compares and track improvements.

  • Enter lab VO2 max or estimate from field tests
  • Calculate training paces and power zones
  • Age and gender-adjusted percentile rankings
  • Track aerobic development over seasons
52 ml/kg/min
Percentile Top 15%
Category Excellent
Hydration & Nutrition

Fuel Your Performance

Based on your sweat rate data, environmental conditions, and workout intensity, get personalized hydration and fueling recommendations.

  • Calculate sweat rate from before/after weights
  • Electrolyte replacement recommendations
  • Carbohydrate intake targets for long efforts
  • Weather-adjusted hydration plans
💧 Today's 3hr Ride
Fluid Intake 750ml/hr
Sodium 800mg/hr
Carbs 60-90g/hr
Total Bottles 4-5 × 500ml

Planned Integrations

We're building connections with the platforms and devices you already use.