Running efficiency · Jan 2025 → Oct 2026

Meters Per Heartbeat

Every logged run, scored by how much ground each heartbeat buys. Filter by run type and distance, then click any point for the run behind it.

EF = avg speed (m/min) ÷ avg HR (bpm) — higher is fitter at the same effort

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Min distance 0 km

Run type

Shaded band = the 1.02–1.07 range a sub-2:00 half marathon needs. Click a point for that run.

Click any point on the chart to see the run it came from.