Route guess

Draw the route you think you ran, before you see the GPS.

After uploading a run, Analyse can offer you the map with the course on it and nothing else, and ask you to sketch the route you believe you took. You then see the GPS.

The step is skipped by default, so uploading a track goes straight to the analysis. Turn it on in Settings.

What it is for

The gap between the route you remember running and the one the GPS recorded is the difference between intent and execution, and it only exists if you commit to an answer before seeing the track.

Drawing

Click to drop a point; points connect in order.
Drag a point to move it.
Drag the handle on a segment to insert a point and split the line.
Right-click, or long-press on a touch screen, to delete a point.

Draw it as you remember it. The comparison is only meaningful against an honest sketch.

What it unlocks

The deviation chart

With a sketch saved, Analyse plots the perpendicular distance between your GPS position and your drawn line over the length of the leg. The shape of the curve distinguishes three things:

A slow, steady climb away from zero is compass drift: a bearing a few degrees off.
A sudden step is a decision — leaving the line, whether or not it was noticed.
A spike that returns to zero is a relocation.

Spans where the deviation exceeds 30 metres are listed as off-route spans, and each one has a jump control that takes the map to it.

The overlay

The sketch is drawn alongside the track in both full course and per-leg, in its own colour, weight and dash style. It is dashed by default, so it does not read as a second GPS track.

Off-route spans are not counted as mistakes

Deviation from your sketch is reported in the deviation chart and its span list. It is not added to the mistake count.

A sketch is a memory rather than a measurement, so a discrepancy between it and the GPS is not evidence of a navigation error. Mistakes are detected from the track itself — see Charts and terrain.

Sprint: draw it, then compare it to the optimum

In a sprint the shortest legal path for each leg can be computed from the map's passability. Sketching the intended route and then revealing both the optimum and the actual track separates running what you planned from planning the fast route. See Sprint analysis.