Candles and bars show opening, highest, lowest and closing speed in each distance window. Blue means closing speed is at least opening speed; rust means it fell. Line shows closing speed, not every recorded sample. Speed uses a centred ±10-second distance/time slope.

Window pace is elapsed seconds per kilometre. Difference = window pace − whole-track elapsed pace: negative is faster, positive is slower. Final partial windows use their actual length. Pauses remain in elapsed time. Elevation is filled across recording gaps and smoothed on a 5 m grid, so short hills are softened and totals can differ from your device. GPS noise and missing elevation limit precision; these measurements are not coaching advice.