AI Endurance
Neural-network training plans for running, cycling and triathlon with HRV-based readiness and an agentic AI coach chat.
Ranked #1 of 19 with an overall score of 3.4/5 (7 of 7 dimensions scored). Visit AI Endurance. Entry last reviewed 2026-10-13.
Running, Cycling, Triathlon AI level: Conversational AI coach Adaptive plan + chat human coach: unverified EUR 18/mo · EUR 180/yr pushes workouts to 10 devices
AI Endurance trains a model on the athlete's own workout history, searches candidate plans to maximise predicted performance on a goal date and re-optimises after every workout. A recovery model built from HRV, resting heart rate, DFA alpha 1, training load and a morning check-in proposes shorter sessions or rest days, the AI coach can reschedule workouts and adjust zones in chat, and daily calorie and macronutrient targets are derived from planned training. It imports from Garmin, Suunto, COROS, Polar, Wahoo, Hammerhead, Intervals.icu, Strava, Oura, Whoop, Zwift and Rouvy and exports workouts to Garmin, Suunto, COROS, Wahoo, Hammerhead, TrainingPeaks, Intervals.icu, Zwift, Rouvy and others. One subscription costs EUR 18 per month or EUR 180 per year with a 14-day trial.
Conversational AI coach. An LLM-based coach the athlete talks to in free text; it can explain, negotiate and change the plan, usually on top of a model-driven or rule-based planner. source
What the coach does
Thirteen coaching capabilities as stated by the vendor. ● full, ◐ partial, ○ not offered, ? unverified. Each links to the page that states it.
| Plan | ||
|---|---|---|
| Builds a periodized planBuilds a periodized plan to a goal and date? | ● | Plan generated from goal, date, availability and current fitness, with phases. source |
| Precise workout prescriptionHow precise is each session? | ● | Interval-level targets (pace, power or HR) executable on a device. source |
| Race preparationRace-specific work, taper, pacing? | ◐ | Race blocks, taper and a pacing or race-day plan for the target event. source |
| Adapt | ||
| Adapts to lifeRe-plans around life? | ● | Missed or moved sessions and availability changes re-flow the plan automatically. source |
| Adapts to fatigueReacts to fatigue and readiness? | ● | Load changes from HRV, sleep, resting HR or subjective feel without the athlete asking. source |
| Handles injury and illnessHandles sick or hurt athletes? | ◐ | Pause and return-to-training progression, not just skip. source |
| Relationship | ||
| Post-workout feedbackExplains what a completed session meant? | ◐ | Per-session analysis referencing the athlete's data and the plan's intent. source |
| ConversationCan the athlete talk to the coach? | ● | Free-text chat that can answer questions and change the plan. source |
| Check-ins and accountabilityDoes it come to you? | ? | unverified |
| Human coach in the loopIs a human in the loop? | ? | unverified |
| Beyond endurance | ||
| Strength and mobilityStrength in the plan? | ? | unverified |
| Nutrition and fuelingFueling guidance? | ● | Session- or day-specific fueling numbers. source |
| Multisport planningOne plan across sports? | ● | Balances load across sports in a single plan. source |
Works with
Partners the vendor states support for, by kind. A partner not listed is unverified, not unsupported.
Watches
| Partner | Direction | Source |
|---|---|---|
| Garmin (watches / Connect) | reads activities and pushes workouts | source checked 2026-10-13 |
| Suunto | reads activities and pushes workouts | source checked 2026-10-13 |
| COROS | reads activities and pushes workouts | source checked 2026-10-13 |
| Polar | reads activities Import only; Polar does not share in-activity HRV. | source checked 2026-10-13 |
| Apple Watch | reads activities and pushes workouts Via the third-party Watchletic app, not a direct integration. | source checked 2026-10-13 |
Bike computers
| Partner | Direction | Source |
|---|---|---|
| Wahoo ELEMNT | reads activities and pushes workouts | source checked 2026-10-13 |
| Hammerhead Karoo | reads activities and pushes workouts | source checked 2026-10-13 |
Indoor trainer apps
| Partner | Direction | Source |
|---|---|---|
| Zwift | reads activities and pushes workouts | source checked 2026-10-13 |
| Rouvy | reads activities and pushes workouts | source checked 2026-10-13 |
Training platforms
| Partner | Direction | Source |
|---|---|---|
| intervals.icu | reads activities and pushes workouts | source checked 2026-10-13 |
| Strava | reads activities | source checked 2026-10-13 |
| TrainingPeaks | pushes workouts; also reads sleep/HRV Workouts exported; activities not imported, only overnight HR/HRV data. | source checked 2026-10-13 |
Wellness and health data
| Partner | Direction | Source |
|---|---|---|
| Oura | reads wellness data | source checked 2026-10-13 |
| WHOOP | reads wellness data | source checked 2026-10-13 |
Facts
| Platforms | iOS, Android, Web source |
|---|---|
| Languages | EN source |
| Company | AI Endurance Inc source |
| Country | unverified |
| Launched | unverified |
Pricing
| Pricing model | Subscription source |
|---|---|
| Monthly price | EUR 18 source |
| Annual price | EUR 180 source |
| Free tier | Free trial source |
| Trial | 14 days source |
Scores
1–5 per dimension by the published rubric. Each score links to its evidence. Blank means no public evidence yet.
| Dimension | Score | Evidence |
|---|---|---|
| Plan quality | 4 | Zones from DFA alpha 1 thresholds, fitness-fatigue modelled readiness, a durability model from fresh vs fatigued power curves, and cited HRV/DFA a1 research; the plan generator itself is a neural network whose internals are not described. evidence checked 2026-10-13 |
| Adaptation | 4 | Vendor documents re-planning from completed/missed sessions and a readiness model (HRV, RHR, DFA a1, check-in) that proposes shorter sessions; an intervals.icu user reports recovering better, another had the recovery score stuck at zero without daily HRV; an App Store review got a hard VO2max session after a long break. evidence checked 2026-10-13 |
| Workout feedback | 3 | Structured workouts push to Garmin and intervals.icu with power or pace ranges (users verified targets and traced a mismatch to a threshold setting, Jul 2025). The AI coach analyses an activity on request and each activity page shows a DFA alpha 1 threshold estimate, but no automatic per-session debrief is documented. evidence checked 2026-10-13 |
| Coaching relationship | 4 | Chat can analyse workouts, create and reschedule sessions and set zones; intervals.icu users used it to generate swim workouts and set running zones, one noting it 'adds a layer of complexity'. Memory does not persist into plan settings (vendor FAQ). Not reported to initiate check-ins. evidence checked 2026-10-13 |
| Transparency | 3 | FAQ documents how readiness, zones and plan suggestions are derived and the app shows predicted gain of the plan up front; the coach explains individual sessions on request. An intervals.icu tester found the model 'closed off and static' and predictions hard to interpret. evidence checked 2026-10-13 |
| Value for money | 3 | Single plan at EUR 18/mo or EUR 180/yr with all features and a 14-day no-card trial; mid-market with no independent reviewer assessment of value found. evidence checked 2026-10-13 |
| Athlete sentiment | 3 | Mixed-positive: intervals.icu thread users report training improvements alongside sync bugs and readiness quirks; App Store 4.2/5 from 24 ratings with positive adaptive-plan reviews and one complaint of an unsafe session after a break. evidence checked 2026-10-13 |
What athletes say
Independent threads and reviews consulted, titles only; no paraphrase.
- AI Endurance (App Store) (appstore, checked 2026-10-13)
- intervals.icu forum: AI Endurance / Intervals.icu Integration (forum, checked 2026-10-13)
- Canadian Running: Optimizing your training with artificial intelligence (founder profile, 2020) (review, checked 2026-10-13)
Common questions
What kind of AI coach is AI Endurance?
AI Endurance is classified as "Conversational AI coach": An LLM-based coach the athlete talks to in free text; it can explain, negotiate and change the plan, usually on top of a model-driven or rule-based planner.
Does AI Endurance push workouts to my watch or bike computer?
Yes. The vendor states structured workouts are sent to Garmin (watches / Connect), Suunto, COROS, Wahoo ELEMNT, Hammerhead Karoo, intervals.icu, Zwift, Rouvy, TrainingPeaks, Apple Watch.
Does AI Endurance adapt the plan to fatigue and sleep?
Yes: Load changes from HRV, sleep, resting HR or subjective feel without the athlete asking.
What does AI Endurance cost?
EUR 18/mo · EUR 180/yr, with a 14-day trial.
Which sports does AI Endurance coach?
Running, Cycling, Triathlon.
Similar tools
enduco LLM coach · Athletica Model · Transition LLM coach · Humango LLM coach · CoachCat LLM coach
Vendor sources consulted
- AI Endurance product checked 2026-10-13
- AI Endurance FAQ checked 2026-10-13
- AI Endurance about checked 2026-10-13
- AI Endurance pricing checked 2026-10-13
- AI Endurance homepage checked 2026-10-13