Pace calculator for road and trail

Give any two of distance, time, and pace, get the third. Load a GPX and get a pace for every segment, adjusted for the climbs, the descents, and the ground underfoot.

Basic Calculator

Quick pace, time, and distance calculations with split tables. Perfect for everyday planning.

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Advanced Calculator

Segment-based race planning. Load a GPX/KML route, define segments, calculate effort-adjusted pacing for road or trail.

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Built for serious planning

Route Upload

Drop a GPX, KML, or KMZ file. We read its distance and elevation and turn it into a segment-by-segment plan you can edit.

Segment Control

Auto-split every N km, or at every peak and valley. Then merge, split, edit, or reorder segments by hand.

Trail-Aware

Climbs priced from measured running economy, descents from what braking actually costs. Tell it how rough the ground is and it prices that too.