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Product updates, training tips, and what I'm building at IntervalCoach.

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FeatureJul 9, 20264 min read

Your Fitbit and Pixel Watch, Meet Your Coach

Google Health is now a first-class data source in IntervalCoach. Sleep, HRV, resting heart rate and more from your Fitbit, Pixel Watch or any Wear OS device flow straight into your daily readiness score, and your workouts sync to Intervals.icu automatically.

spotlightJul 8, 20263 min read

Spotlight: Djeno Points a Whole Spring at the Alpe d'Huez

A Flanders amateur who turned cycling's most famous climb into a personal deadline, and spent a spring of sweet spot and threshold work reverse-engineering the fitness for it.

FeatureJul 7, 20264 min read

Bring Your Training Into Claude, ChatGPT and Cursor

You can now connect IntervalCoach to Claude, ChatGPT or Cursor. The assistant reads the things only our engine knows, your personal recovery curves, your readiness measured against your own baseline, your adaptation signals, and combines them with the other tools already in your workflow: your calendar, Slack, email. It's built on MCP, the open standard, and it's available on the Max plan.

spotlightJul 4, 20264 min read

Spotlight: Phaidra, Building a Climber's Engine for Gatineau

A seven-hour endurance ride at the peak of her biggest week, an aerobic base rebuilt from 43 to 87, and a system being shaped for one September time trial in Gatineau.

FeatureJul 4, 20263 min read

Your Readiness Score Grew Up

Readiness Score 2.0 is built on your feedback: the score now measures purely how recovered your body is, anchors once your morning data is in, and treats how you feel as a full factor. Training advice gets its own place, so a rest day reads like what it is.

FeatureJul 3, 20263 min read

Your Whole Training Block, Planned for Real

Your calendar now holds real, structured workouts weeks ahead: four weeks on Pro, eight weeks on Max. Adding a session builds the actual workout instantly. And when life changes your week, the rest of the week now rebalances around it.

FeatureJun 30, 202610 min read

June Update: Android, Your Whole Ride Charted, and Clubs

IntervalCoach is now on Android. Your activity view charts the whole session with a per-ride power curve and durability. Clubs let you train with the people you ride and run with. Plus illness you can see coming, a recovery profile for everyone, Coach+ that reads the weather, and a stack of smarter-plan work.

spotlightJun 25, 20263 min read

Spotlight: @andy-mcburney Stacks Three Sports a Day for 70.3 Jones Beach

A New York triathlete who swims, rides and runs in the same day, raced two 70.3s this spring, trained through a head cold, and is now pointed at Jones Beach in September.

ResearchJun 24, 20265 min read

Can you see illness coming? What the overnight data shows

The second read from our recovery data. In the days before a sick day your resting heart rate creeps up and your HRV sags, and resting heart rate is the earliest reliable sign of all. This is IntervalCoach at its best: proven textbook markers, sharpened by the signals our own athletes give us, so your coach can see an infection coming a little sooner and pace your comeback by your body, not the calendar.

FeatureJun 23, 20262 min read

IntervalCoach Is Now on Android

Your AI cycling and running coach now runs on Android too, completing the family alongside the web, iPhone and Mac apps. Full parity with the iPhone version: daily briefing, Coach+, your training plan, and the new activity charts.

spotlightJun 22, 20263 min read

Spotlight: François and 24 Hours of Le Mans on a Bike

A French rider sixty-eight days out from the 24h du Mans Vélo, with a CTL of 107 and a fitness base that has not wobbled all spring. The shape of a build aimed at riding through the night.

ResearchJun 21, 20266 min read

Do fitter athletes recover faster? What our recovery curves show

This is not a one-off discovery. It is the platform doing its job: because IntervalCoach learns a recovery curve for every athlete, we can ask questions across thousands of them, and the answers flow straight back into the product. The first one surprised me. Fitness changes how hard a session hits you, not how fast you clear it.

spotlightJun 20, 20263 min read

Spotlight: Kris and a Full Spring of Racing

A road racer in eastern China who spent the spring on a regional gran fondo series, with a CTL of 88 and a fitness base that has barely moved off 100 for two months. What staying race-ready actually looks like.

FeatureJun 17, 20265 min read

One system that learns how you recover, and shows its work

Two questions decide most training days: am I recovered enough to go hard, and if not, when will I be? IntervalCoach now answers both from your own recovery, not a population average, and shows you exactly how it got there.

FeatureJun 16, 20264 min read

Tired, or getting sick? IntervalCoach now catches it before you feel it

Your HRV tanks the same way whether you smashed yesterday's intervals or you're coming down with something. That ambiguity is exactly the wrong thing to guess at. Here is how IntervalCoach now reads the signals that training cannot fake.

spotlightJun 15, 20262 min read

Spotlight: Marsl and the Seven-Hour Saturday

A German rider with a CTL in the low 80s, a self-set 350-watt FTP target, and a 200 km radmarathon he just rode in seven hours and seventeen minutes. The shape of a block that earned its race day.

spotlightJun 9, 20262 min read

Spotlight: @tino-76 Is 49 and Rebuilding on His Own Terms

A masters rider who is honest about his limits: recovery is slow, long threshold efforts break him. So he trains around them, and the rebuild is working.

TrainingJun 7, 20265 min read

Coming Back From Illness Without Blowing Yourself Up

The most common way athletes set themselves back is the week they feel better. Here is the graduated return-to-training framework IntervalCoach uses, and what to watch for in the days before you are ready to push again.

spotlightJun 7, 20263 min read

Spotlight: @javi Is Building a Mallorca Engine for La Purito

A Palma-based rider sitting on an engine most of us never reach: CTL in the low 80s, a Fitness Base above 80 all month. He rode the Mallorca 312 this spring, and now he is pointing the same engine at one of Europe's hardest climbing days.

FeatureJun 4, 20264 min read

Race Pace Plans: A Coach For The Day Itself

All the training in the world doesn't matter if you go out too hard and blow up at 60%. Race Pace Plans give you a specific, goal-aware pacing strategy, a warm-up protocol, and an honest read on the day — a full plan for your A and B races, and a lighter version for C events.

FeatureJun 1, 20263 min read

Introducing Clubs: Train Together on IntervalCoach

The hardest part of training isn't the workout — it's showing up, week after week. Clubs bring the people you ride and run with into IntervalCoach, so your friends keep you honest while the coach keeps each of you on your own plan: a shared feed, fair leaderboards, a weekly AI read on the group, and shared events.

spotlightJun 1, 20263 min read

Spotlight: Bento Galado, 100 km and 7,000 Metres Up

A trail runner in the Algarve, three hours and 1,120 metres of climbing on a 31-degree morning, all of it pointed at a 100 km mountain ultra in late June.

spotlightMay 28, 20263 min read

Spotlight: Jos and the 100-Mile Rebound

Two days from a 100-mile gravel race, after a Merano training camp that capped a 90-day arc from CTL 50 to 83. The shape of a build that worked.

spotlightMay 26, 20263 min read

Spotlight: @falsesummit, the Pikes Peak APEX Build

Four hours of Colorado gravel in 31-degree heat, Z6 intervals deep into hour three. The plan said two. In June, she goes longer.

FeatureMay 26, 20265 min read

Trail running and brick workouts as first-class sports

Trail running and brick workouts (bike + run) are now first-class sports across IntervalCoach — schedule chips, dedicated catalog templates, terrain-aware race pacing for trail events, and a race-sim brick pattern that auto-fires for triathletes in their final taper.

FeatureMay 25, 202612 min read

May Update: Coach Mode, Mac app, Recovery Profile, and a Walking Goal

Invite your human coach onto IntervalCoach. A full Mac app. Training Score out of beta for everyone. Your own personal recovery curves, learned from HRV and sleep deltas. Walks and hikes as first-class sports, with goal-event support for the Camino, Vierdaagse, Kennedy Mars and more.

spotlightMay 19, 20264 min read

Spotlight: @joao-brito, the Marathon He Already Ran

Most spotlights look forward to a race. This one looks back. Three weeks ago, in 30°C heat, João held threshold pace for three and a half hours in Aveiro.

TrainingMay 17, 20264 min read

What to Train For When You're Not Racing

Not everyone trains for a race. IntervalCoach supports nine non-race goal templates, each with its own duration, ramp rate, and phase model, so the plan still makes sense when there is no start line to count down to.

spotlightMay 12, 20263 min read

Spotlight: @pablo-gil, 32 Days to Trail 100 Andorra

Pablo finished Transgrancanaria Classic in March. He started the next build the week after. In 32 days he runs Trail 100 Andorra: 100 km in the Pyrenees.

FeatureMay 11, 20267 min read

Why your AI coach did that: Agent Log goes GA

An audit log for every decision the AI coach makes. Today's readiness call, why this workout got picked, what changed when your wellness data synced mid-morning, every approve/reject, every adjustment made through Coach+. Now available for every IntervalCoach athlete, with no flag toggle and no tier gate.

FeatureMay 7, 20262 min read

Bringing your coach onto IntervalCoach

You can now invite a human coach onto IntervalCoach. They see your dashboard, edit your weekly plan if you let them, and chat through training with you in Coach+. Coaches use it free; athletes pay for Max.

spotlightMay 5, 20263 min read

Spotlight: @vonpiter, Three Days from UŁAN 600

On Friday morning, @vonpiter rolls out for 500 km of Polish gravel. The week before is the calmest one he has had in three months. That is on purpose.

FeatureMay 5, 20267 min read

Training Score: One Number That Actually Tells You Something

A single 0-100 score for how well you're training, built from four components that map to what coaches actually look at — fitness, overload, consistency, and load management. Now generally available for every Pro, Max, and trial athlete, with three real stories from the data to show what it surfaces.

ai coaching Behind the scenesApr 29, 20262 min read

What Kristen Faulkner's AI Experiment Means for the Rest of Us

The Olympic champion isn't building a dashboard. She's building a model of her own body. Here's why that should matter to every endurance athlete — and why most of us shouldn't have to write the code ourselves.

FeatureApr 26, 20267 min read

April Update: iOS Launch, Apple Health, and Smarter Daily Adaptation

iPhone app on the App Store, Apple Health as a first-class data source, public profiles with milestone badges, peer benchmarks for Max, eFTP projection on Analytics, and a daily adaptation engine that drives the dashboard, the workout, and Coach+ from the same readiness signals.

FeatureApr 22, 20265 min read

Blog

Your Fitbit and Pixel Watch, Meet Your Coach

Spotlight: Djeno Points a Whole Spring at the Alpe d'Huez

Bring Your Training Into Claude, ChatGPT and Cursor

Spotlight: Phaidra, Building a Climber's Engine for Gatineau

Your Readiness Score Grew Up

Your Whole Training Block, Planned for Real

June Update: Android, Your Whole Ride Charted, and Clubs

Spotlight: @andy-mcburney Stacks Three Sports a Day for 70.3 Jones Beach

Can you see illness coming? What the overnight data shows

IntervalCoach Is Now on Android

Spotlight: François and 24 Hours of Le Mans on a Bike

Do fitter athletes recover faster? What our recovery curves show

Spotlight: Kris and a Full Spring of Racing

One system that learns how you recover, and shows its work

Tired, or getting sick? IntervalCoach now catches it before you feel it

Spotlight: Marsl and the Seven-Hour Saturday

Spotlight: @tino-76 Is 49 and Rebuilding on His Own Terms

Coming Back From Illness Without Blowing Yourself Up

Spotlight: @javi Is Building a Mallorca Engine for La Purito

Race Pace Plans: A Coach For The Day Itself

Introducing Clubs: Train Together on IntervalCoach

Spotlight: Bento Galado, 100 km and 7,000 Metres Up

Spotlight: Jos and the 100-Mile Rebound

Spotlight: @falsesummit, the Pikes Peak APEX Build

Trail running and brick workouts as first-class sports

May Update: Coach Mode, Mac app, Recovery Profile, and a Walking Goal

Spotlight: @joao-brito, the Marathon He Already Ran

What to Train For When You're Not Racing

Spotlight: @pablo-gil, 32 Days to Trail 100 Andorra

Why your AI coach did that: Agent Log goes GA

Bringing your coach onto IntervalCoach

Spotlight: @vonpiter, Three Days from UŁAN 600

Training Score: One Number That Actually Tells You Something

What Kristen Faulkner's AI Experiment Means for the Rest of Us

April Update: iOS Launch, Apple Health, and Smarter Daily Adaptation

Your Apple Watch, Meet Your Coach

HRV-CV: What Volatility Tells You That HRV Alone Does Not

IntervalCoach Is Now on iPhone

The Science Behind IntervalCoach

How IntervalCoach Adapts Your Workout Every Day

From Goal to Daily Workout: How IntervalCoach Plans Your Training

Performance Benchmarks: See How You Compare

Training Milestones and Public Profiles

Five Periodization Models Explained: Which One Fits Your Training?

How to Use CTL, ATL, and TSB to Train Smarter

March Update: Advanced Analytics, Editable Plans, and a Rebuilt Workout Engine

Introducing Coach+: Your AI Coach That Knows Your Training

Why I Built IntervalCoach

Your Fitbit and Pixel Watch, Meet Your Coach

Spotlight: Djeno Points a Whole Spring at the Alpe d'Huez

Bring Your Training Into Claude, ChatGPT and Cursor

Spotlight: Phaidra, Building a Climber's Engine for Gatineau

Your Readiness Score Grew Up

Your Whole Training Block, Planned for Real

June Update: Android, Your Whole Ride Charted, and Clubs

Spotlight: @andy-mcburney Stacks Three Sports a Day for 70.3 Jones Beach

Can you see illness coming? What the overnight data shows

IntervalCoach Is Now on Android

Spotlight: François and 24 Hours of Le Mans on a Bike

Do fitter athletes recover faster? What our recovery curves show

Spotlight: Kris and a Full Spring of Racing

One system that learns how you recover, and shows its work

Tired, or getting sick? IntervalCoach now catches it before you feel it

Spotlight: Marsl and the Seven-Hour Saturday

Spotlight: @tino-76 Is 49 and Rebuilding on His Own Terms

Coming Back From Illness Without Blowing Yourself Up

Spotlight: @javi Is Building a Mallorca Engine for La Purito

Race Pace Plans: A Coach For The Day Itself

Introducing Clubs: Train Together on IntervalCoach

Spotlight: Bento Galado, 100 km and 7,000 Metres Up

Spotlight: Jos and the 100-Mile Rebound

Spotlight: @falsesummit, the Pikes Peak APEX Build

Trail running and brick workouts as first-class sports

May Update: Coach Mode, Mac app, Recovery Profile, and a Walking Goal

Spotlight: @joao-brito, the Marathon He Already Ran

What to Train For When You're Not Racing

Spotlight: @pablo-gil, 32 Days to Trail 100 Andorra

Why your AI coach did that: Agent Log goes GA

Bringing your coach onto IntervalCoach