140.624–36 week program

IRONMAN plans built to put you on the finish line

A 140.6 is six to ten months of work. Done wrong it ruins you; done right it changes you. Your AI coach scales volume smartly, defends recovery, and rehearses every mile of race day.

2.4 mi swim112 mi bike26.2 mi run24–36 weeks
Download on the App StoreGet it on Google Play
4.8· from real Ironman finishers
Free 30-day trial
140.6

Unstoppable endurance

Build the aerobic engine and durability that 140.6 demands — block by block, never random.

Smart periodization

Base, build, peak, race. The AI works backward from your race date and protects every key block.

Recovery defended

Sleep, HRV, and load tracked daily. Auto-deload before you bury yourself — every time.

Strength + mobility

Two short sessions a week and load ceilings built into your week — durability for the long block.

Inside your plan

Smart training that adapts to you

Your plan reshapes every week based on what you actually did, how you slept, and how you felt — not a fixed PDF written months ago.

A plan that holds for 30 weeks

A PDF plan you wrote in January is fiction by April. Your AI coach reads what you did each week and rewrites the next — so the plan is always honest, always relevant.

  • Race date locked: AI works backward and protects your peak
  • Auto-deload when sleep, HRV, or load signal you need it
  • Travel weeks, sick weeks, life weeks — the plan adapts
  • Chat with your AI coach any time about a swap or concern
A plan that holds for 30 weeks

Race rehearsal, not race hope

The athletes who finish strong rehearse race day for weeks before it. Your plan includes long-day fueling, brick days, and progressive race-pace simulations.

  • Long bikes that build to 4–6 hours with race-pace blocks
  • Race rehearsal days with full fueling and pacing protocols
  • Brick workouts that train your legs for the marathon
  • Course-aware pacing — Lake Placid is not Texas
Race rehearsal, not race hope

The details that change everything

Nutrition, taper, mental game, recovery — the unsexy details are where finish times happen. The app handles them so you don't have to remember.

  • Carbs/hour and sodium targets tuned to your sweat rate
  • Two-week taper that arrives fresh, not flat
  • Strength, mobility, and core integrated into your week
  • Race-morning checklist, warm-up, and pacing plan
The details that change everything

A week with your AI coach

What training actually looks like

A mid-build week, 12–14 weeks out. Yours will look very different at base vs peak — the AI sequences it for you.

Mon
  • Endurance
    50–60 min
  • Mobility
    15 min
Tue
  • Sweet spot
    90 min
  • Easy
    30 min
Wed
  • Endurance
    60–75 min
  • Strength
    25 min
Thu
  • Tempo
    45–60 min
  • Tempo
    75 min
FriRecovery
  • Recovery or yoga
    20 min
Sat
  • Long ride
    4–5 hr
Sun
  • Steady long run
    75–90 min

Yours will look different — the AI picks every session based on your fitness, sleep, schedule, and race date.

Every detail handled

More than a plan — a system

24–36 week periodization

Base, build, peak, race — locked to your race date, never fiction.

Long-day building

Saturday rides progress to 5–6 hours with race-pace blocks built in.

Race-day fueling

Personalized carbs, sodium, hydration — rehearsed weekly inside long sessions.

Strength + durability work

Two short sessions a week — built to hold up for 30+ weeks of training.

Smart auto-deload

When load, sleep, or HRV go red, the AI pulls you back before you crack.

Race-week and race-morning plan

Taper, pacing, fueling, warm-up, mental cues — all dropped on race week.

Works With Your Favorite Apps & Devices

Seamless integration

Garmin
Apple Watch
Strava
Wahoo
Zwift
Garmin
Apple Watch
Strava
Wahoo
Zwift
Garmin
Apple Watch
Strava
Wahoo
Zwift
Garmin
Apple Watch
Strava
Wahoo
Zwift

Auto-Track Completion

Workouts are automatically marked complete when your device syncs — no manual logging needed.

Push to Devices

Send structured workouts directly to your Garmin, Apple Watch, or bike computer with targets and intervals built in.

Indoor Trainer Control

Direct support for most indoor smart trainers — Transition controls resistance in real time during structured rides.

Real athletes. Real results.

Trusted by triathletes

"Transition has made my training simple and dynamic. With shifting schedules and weather, this system adjusts to variables and makes me better each day."

Creed Hendrickson

Creed Hendrickson

Triathlete

"Relatively new to triathlon but experienced with TrainingPeaks, Garmin and Strava. Transition has genuinely impressed me. The Smart Coach is good and the adaptive training seems well thought out, the app is clean and intuitive and the built in nutrition logging – especially protein tracking – is excellent."

Simon Wilkins

Simon Wilkins

Triathlete

"Transition has made my training simple and dynamic. With shifting schedules and weather, this system adjusts to variables and makes me better each day."

Creed Hendrickson

Creed Hendrickson

Triathlete

"Relatively new to triathlon but experienced with TrainingPeaks, Garmin and Strava. Transition has genuinely impressed me. The Smart Coach is good and the adaptive training seems well thought out, the app is clean and intuitive and the built in nutrition logging – especially protein tracking – is excellent."

Simon Wilkins

Simon Wilkins

Triathlete

"Transition has made my training simple and dynamic. With shifting schedules and weather, this system adjusts to variables and makes me better each day."

Creed Hendrickson

Creed Hendrickson

Triathlete

"Relatively new to triathlon but experienced with TrainingPeaks, Garmin and Strava. Transition has genuinely impressed me. The Smart Coach is good and the adaptive training seems well thought out, the app is clean and intuitive and the built in nutrition logging – especially protein tracking – is excellent."

Simon Wilkins

Simon Wilkins

Triathlete

"Transition has made my training simple and dynamic. With shifting schedules and weather, this system adjusts to variables and makes me better each day."

Creed Hendrickson

Creed Hendrickson

Triathlete

"Relatively new to triathlon but experienced with TrainingPeaks, Garmin and Strava. Transition has genuinely impressed me. The Smart Coach is good and the adaptive training seems well thought out, the app is clean and intuitive and the built in nutrition logging – especially protein tracking – is excellent."

Simon Wilkins

Simon Wilkins

Triathlete

"I get a full 3-sport plan that adjusts to my starting fitness and my ongoing training, provides immediate feedback on workouts, can adjust plans quickly based on my progress or schedule interruptions, and can even provide strength, flexibility, and nutrition advice. It all comes at a small price compared to a human coach."

Prescott Balch

Prescott Balch

Triathlete

"Very well crafted app for multisport athletes. The developer acts quickly on suggestions. Highly recommend."

Matteo Castagna

Matteo Castagna

Triathlete

"I get a full 3-sport plan that adjusts to my starting fitness and my ongoing training, provides immediate feedback on workouts, can adjust plans quickly based on my progress or schedule interruptions, and can even provide strength, flexibility, and nutrition advice. It all comes at a small price compared to a human coach."

Prescott Balch

Prescott Balch

Triathlete

"Very well crafted app for multisport athletes. The developer acts quickly on suggestions. Highly recommend."

Matteo Castagna

Matteo Castagna

Triathlete

"I get a full 3-sport plan that adjusts to my starting fitness and my ongoing training, provides immediate feedback on workouts, can adjust plans quickly based on my progress or schedule interruptions, and can even provide strength, flexibility, and nutrition advice. It all comes at a small price compared to a human coach."

Prescott Balch

Prescott Balch

Triathlete

"Very well crafted app for multisport athletes. The developer acts quickly on suggestions. Highly recommend."

Matteo Castagna

Matteo Castagna

Triathlete

"I get a full 3-sport plan that adjusts to my starting fitness and my ongoing training, provides immediate feedback on workouts, can adjust plans quickly based on my progress or schedule interruptions, and can even provide strength, flexibility, and nutrition advice. It all comes at a small price compared to a human coach."

Prescott Balch

Prescott Balch

Triathlete

"Very well crafted app for multisport athletes. The developer acts quickly on suggestions. Highly recommend."

Matteo Castagna

Matteo Castagna

Triathlete

"Transition has helped me improve my Ironman training more than any other method I have encountered in my triathlon journey. It is incredibly precise and personalized. I cannot recommend it enough!"

Carlos Rebelo

Carlos Rebelo

Triathlete

"A great option for beginners that do not want to spend $300/mo for a pro trainer but want to have a comprehensive and adaptive, structured training with basic feedback and some tips."

Luis B.

Luis B.

Triathlete

"Transition has helped me improve my Ironman training more than any other method I have encountered in my triathlon journey. It is incredibly precise and personalized. I cannot recommend it enough!"

Carlos Rebelo

Carlos Rebelo

Triathlete

"A great option for beginners that do not want to spend $300/mo for a pro trainer but want to have a comprehensive and adaptive, structured training with basic feedback and some tips."

Luis B.

Luis B.

Triathlete

"Transition has helped me improve my Ironman training more than any other method I have encountered in my triathlon journey. It is incredibly precise and personalized. I cannot recommend it enough!"

Carlos Rebelo

Carlos Rebelo

Triathlete

"A great option for beginners that do not want to spend $300/mo for a pro trainer but want to have a comprehensive and adaptive, structured training with basic feedback and some tips."

Luis B.

Luis B.

Triathlete

"Transition has helped me improve my Ironman training more than any other method I have encountered in my triathlon journey. It is incredibly precise and personalized. I cannot recommend it enough!"

Carlos Rebelo

Carlos Rebelo

Triathlete

"A great option for beginners that do not want to spend $300/mo for a pro trainer but want to have a comprehensive and adaptive, structured training with basic feedback and some tips."

Luis B.

Luis B.

Triathlete

Why choose Transition?

Purpose-built for triathletes.

FeatureTransitionTriDotTrainingPeaks
AI-Powered Training
Adaptive Training Plans
Manual
AI Coach Chat
AI Video Analysis (Swim, Bike, Run)
Nutrition Tracking
Strength Training
Limited
Third-party
Smart Trainer Control
Race Predictions
Garmin & Apple Watch Sync
Native Mobile App
Limited

Pricing

Simple, transparent pricing

$139/year

Everything you need to optimize your triathlon training. No hidden fees. Cancel anytime.

Save $1,500+ per year

compared to hiring a personal coach

Personalized training plan
Adaptive weekly adjustments
Garmin & Apple Watch sync
Indoor trainer support
Strength training included
Unlimited coach chat
Advanced performance analytics
Recovery and nutrition guidance
Start Free Trial

FAQ

Common questions about Transition

Still have questions? Email us at [email protected]

Ready to crush your next race?

Get the app. Train smarter. Race faster.

Download on the App StoreGet it on Google Play