Home / Maps & GPS / GPX Pace & Splits

GPX Pace & Splits

Per kilometre or mile splits with pace, speed, climbing and heart rate from any GPX or TCX activity.

Free, no uploads, no sign-up. Runs 100% in your browser.

How GPX Pace & Splits works

Tracks are read and processed in your browser. The map is drawn on a canvas with no tiles by default, so not even your location area is sent anywhere. You can turn on an OpenStreetMap background if you want one. Moving time leaves out stops, so it matches what sport watches show more closely than elapsed time.

Input: GPX, TCX, KML, GEOJSON. Output: CSV.

How to use GPX Pace & Splits

1. Drop an activity file.
2. Pick kilometres or miles, and pace or speed.
3. Read the splits table, your fastest split is marked.
4. Download the splits as CSV.

Tips

• The map has no background tiles by default, so your location area is not sent anywhere. Turn on the map background if you want street detail.
• Most watches and apps export GPX. Look for Export or Share in the activity menu.

GPX Pace & Splits FAQ

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Related tools

• GPX Elevation Profile: See the elevation profile of a route with grade colours, climbs, total ascent and a map.
• Route Heatmap: Draw all your runs, rides or hikes on top of each other as a glowing heatmap poster.
• GPS / GIS Converter: Convert GPX, KML, KMZ, GeoJSON, Shapefile, TCX and CSV with a map preview and track stats.
• GPX Merge & Split: Join several GPX tracks into one, or split a long track at breaks, GPS jumps or into equal parts.