You're a Physiologically Unique Runner. Why aren't your training insights just as unique?

Real-time injury alerts and training insights built with your data and sports science, not AI.

Currently supported: Garmin & Polar devices only for beta

Baseline Risk Signal

84/100

Injury Risk Awareness

Status: Injury Prone

Training Load

+12.4%

MONTUEWEDTHUFRISATSUN

Recovery Signals

Sleep Consistency32%

Resting HR Drift+8 bpm

HRV Trend-15%

Spikes Insight

You are currently in a competitive phase, not a build phase. Recovery is trending below baseline, so weekly load should remain stable and not increase beyond the general 10% guideline.

Competitive PhaseLoad Increase < 10%

Personalized Guidance

Running Platforms Are Broken

The tools runners rely on today are built on assumptions and a lack of context, not your data.

Population Averages

Every platform uses generalized formulas like 220 - age to calculate your max heart rate. Your physiology isn't just "average" though.

Lack of Context

Sickness, Injury Risk, PRs, Current Fitness, Phase of season, Max HR. These are all important things to take into context when building your training or insights. Yet, no current platform does.

Training Feels Like Homework

Charts, graphs and numbers everywhere. Runners spend more time trying to interpret their data than actually using it.

How Spikes Works

Spikes analyzes wearable data relative to your physiological baseline and training history -- then generates runner-specific insight, not generic charts. Uses ML built on sports science.

Sleep

6 hours

Stress

Pace

7:30 / mile

Weather

90°F

Heart Rate

180 bpm

Spikes

Comparing against your baseline...

Uses ML and Sports Science to analyze your data

Today's Effort

High

Expected

Moderate

Run Interpretation

Higher-Than-Normal Effort

This run required more physiological strain than your recent runs at similar pace. The engine detected elevated effort relative to your historical patterns.

Recovery State

Recovery Risk Elevated

Low sleep, high stress, heat exposure, and elevated heart rate suggest reduced readiness today.

Recommended Next Step

Keep Next Session Easy

Reduce volume or intensity on your next run to avoid accumulating excess fatigue this week.

Injury Prevention

Spikes continuously monitors five proven injury precursors from your wearable data, combines them into a single risk score, and alerts you when the science says slow down.

Data we monitor

Acute:Chronic Workload Ratio

Detects dangerous spikes in training load relative to your baseline.

Heart Rate Variability Trend

Flags suppressed HRV patterns that precede overtraining injuries.

Run Efficiency Drop

Biomechanical degradation shows up in efficiency scores before pain does.

Training Monotony

Too much similarity in daily load is a known injury precursor in the research.

Zone Creep

Heart rate drifting into higher zones at the same pace signals accumulated fatigue.

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Risk Score

Baseline + trend analysis

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Output Alerts

Low Risk

Training load and recovery signals are balanced. You're in a healthy adaptation window.

Elevated Risk

One or more signals are trending toward a concern. Spikes recommends reducing intensity on next session.

High Risk

Multiple injury precursors are active. Spikes sends an alert and recommends a rest or easy day immediately.

Platform Features

Injury Risk Score + Alerts

A continuously updated injury risk score built from five proven precursors -- ACWR, HRV trends, run efficiency drops, training monotony, and zone creep. When the science says slow down, Spikes tells you.

Historical Dashboard

A full lookback across your key health and training metrics -- HRV, activities, sleep, resting heart rate, ACWR, and more -- so you can spot trends, track recovery, and understand your body over time.

Personalized Max Heart Rate

Your max HR is the foundation of every zone, grade, and alert in Spikes. We don't guess it with a formula -- we scrape your top peak HR windows, confidence-grade each one, and refine it as you run more.

Pace Zone Profile

Understand the relationship between your pace and heart rate over time. See how your aerobic efficiency evolves and identify when your fitness is genuinely improving -- not just when you ran faster.

Run Efficiency Grading

Every run gets a grade based on how efficiently you performed -- not just how fast you went. Understand the quality of your effort, not just the quantity.

Environmental Pace Grading

Your pace doesn't exist in a vacuum. Spikes accounts for temperature, humidity, altitude, elevation, and wind speed -- so a hard run in the heat gets the credit it deserves.

Smart Training Load

Weekly load calculated with context -- using graded paces instead of raw numbers. Finally, a load metric that actually means something.

Run Categorization

Every run is automatically categorized -- easy, tempo, threshold, long run, and more -- based on your actual zones and effort, not just pace. Know what kind of run you did, not just how far.

Claude AI Layer

Ask questions about your training in plain English. Claude contextualizes your data -- zones, load, grades, trends -- against what you're actually training for and gives you answers, not more charts.

Pricing

Save 17%

Free

Get started with the fundamentals of science-driven training.

Personalized max heart rate
Heart rate zone calculation
Basic run efficiency grade
Weekly training summary
Wearable sync (Garmin & Polar)