Garmin Lap Analyzer

👥 3 users

📦 v1.0.2

💾 15.05KiB

📅 2026-02-19

View on Chrome Web Store

Chrome will indicate if you already have this installed.

Overview

Garmin Connect shows max HR and average HR per lap — but never the minimum. If you're doing interval training and want to
see how far your heart rate drops during recovery laps, there's no built-in way to get that.

Garmin Lap Analyzer fills that gap. When viewing any activity on Garmin Connect, a "Lap Stats" button appears. Click it to:

- Select which laps to analyze
- See min HR, max HR, and avg HR computed from raw per-second measurements
- See avg pace and distance per lap
- Copy the results as a clean, plain-text table

How it works:
The extension reads the raw FIT file (per-second recording data) directly from Garmin's servers using your active session —
no passwords or tokens are stored. All processing happens locally in your browser.

Example output:

Lap | Distance | Avg Pace | Min HR | Max HR | Avg HR
1 | 1.00 km | 5:15/km | 120 | 162 | 145
2 | 1.00 km | 5:08/km | 130 | 168 | 152
3 | 1.00 km | 5:02/km | 128 | 175 | 155

Privacy:
- No external servers — all data stays in your browser
- No stored credentials
- No tracking, no analytics, no telemetry
- Only activates on connect.garmin.com
Open source: https://github.com/BarakGahtan/garmin-lap-analyzer