Built for runners who track every metric

Train with data,not instinct.

A running coach that reads your recovery each morning — then adapts every session to how your body actually feels.

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20+ Free Tools35 Knowledge ArticlesGarmin SyncAI Training Coach
Dashboard · Mon, Jun 15
Garmin synced
Daily Readiness
Resting HR
46bpm
7d avg 48
HRV
58ms
7d avg 54
Sleep
7:32h
7d avg 7:08
Respiration
14.2brpm
7d avg 14.6
Last 12 weeks132 km
Race predictions
0.0VDOT
5K22:20
10K46:24
Half1:42:55
Marathon3:36:18
Training HR zonesthis week
Z1 8%Z2 56%Z3 21%Z4 10%Z5 5%
Integrations
GarminGarmin
COROSCOROS
Apple HealthApple Health
The system

Read your body. Train on signal.

Recovery, training, racing and lab work — one feedback loop, from the run in to the right session out.

Daily Readiness

Know when to push.

HRV, resting heart rate, sleep quality, and respiration rate combined into a daily readiness score — so your training adapts to your biology, not just your calendar.

Resting HR
46bpm
7d 48
HRV
58ms
7d 54
Sleep
7:32h
7d 7:08
Respiration
14.2brpm
7d 14.6
Readiness · 7 days↑ recovering
AI Coach

Ask anything. Get coached, not chatbotted.

Am I ready for my next race?
Your VDOT is up 3 pts in 6 weeks — goal pace looks realistic.
AI Training Plan

A plan that knows how you feel today.

Tempo RunToday
8 km · 4:35–4:45 /km · Zone 3
Activity Analysis

Deeper than your watch app.

Recovery Run · 5.88 km · 6:24 /km
ElevationHeart rate
Lab Results

Upload your tests.

LT1
148 bpm
LT2
164 bpm
Free tools

20+ Free Running Tools

VDOTRace PredictorPaceHR ZonesFIT ViewerGPX
Knowledge Hub

The science behind serious training.

35 research-backed articles written for data-driven runners — from Zone 2 physiology to race strategy, each one connects to your own metrics.

PhysiologyZone 2, VO2 Max, Lactate Threshold, Running Economy
Training SciencePeriodization, Marathon Taper, Strength, Race Strategy
Data & AnalysisHR Drift, GPS Accuracy, Running Dynamics, Decoupling
Zone 2 Training
Daily Readiness & Training
Running Economy
Heart Rate Drift
Race Strategy & Pacing
Strength Training for Runners
Browse All 35 Articles

20+ Free Running Tools

No sign-up required. Run calculations, predict race times, analyze FIT files — all browser-based.

Performance

VDOT Calculator

Calculate your VDOT score and training paces

Race Predictor

Predict finish times using Riegel, Cameron & Daniels

Age Grading

Compare performance across ages and genders

Running Level

See how you rank among runners your age

VO2 Max Calculator

Estimate aerobic fitness with 4 test methods

Training

Pace Calculator

Convert between pace, speed, and finish times

HR Zone Calculator

Calculate zones from age, Karvonen, or LTHR

Split Calculator

Plan even or negative splits for your race

Treadmill Pace

Convert treadmill speed to outdoor pace

Nutrition & Data

Calorie Calculator

Estimate calories burned while running

Fueling Calculator

Plan carb and hydration for long runs

Pace Chart

Complete pace-to-finish-time reference table

Pace Conversion Chart

Convert between KPH, MPH, min/km, and min/mi

File Tools

FIT Viewer

Visualize FIT files with maps and charts

FIT to CSV

Convert FIT files to spreadsheet format

FIT to GPX

Convert FIT files to GPX for other apps

GPX Viewer

Visualize GPX files with maps and charts

GPX to CSV

Convert GPX files to spreadsheet format

GPX to FIT

Convert GPX files to Garmin FIT format

How it works

Up and running in minutes.

Connect your watch and your data flows automatically. Or upload FIT files and get started right now.

01

Connect Garmin

Your activities, HRV, sleep, and health data sync automatically. Or upload FIT files directly.

02

Understand your data

Daily readiness scores, running dynamics, efficiency trends, lap-level analysis — all in one place.

03

Train with intention

Get daily AI training recommendations, ask your coach anything, and learn the science behind every decision.

Integrations

Works with your watch

Connect your running watch for automatic data sync, or upload FIT files manually.

GarminGarmin
COROSCOROS
Apple HealthApple Health

Don't use a supported watch? You can still upload FIT files directly.

Try FIT File Viewer
New · Free

Chat with your data in Claude & ChatGPT

Connect Hashiri.AI to your AI assistant and ask questions answered from your live training data. Read-only, secure, and free — no subscription required.

  • Live data, not a static export
  • Works with Claude (web + Code) and ChatGPT
  • Read-only — it can never edit or post
Explore the MCP Connector
CClaudeHashiri.AI · connected
How did my Zone 2 volume trend this month?

reading get_training_summary

Zone 2 time is up +18% vs last month (4:32 → 5:21), across your last 12 runs. Aerobic base is building well.

iOS · Android

Take Hashiri.AI with you

Daily readiness, adaptive training, and deep run analysis — right from your phone.

Get it on Google PlayDownload on the App Store
Hashiri.AI dashboard on iPhone — daily readiness, today's training and fitness

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