Can I compare two runs on the same course?

Yes. Loading two activities recorded on the same route is the ideal use case — you immediately see which one was faster and where you gained or lost time.

Do the two files need the same format?

No. You can compare a GPX against a FIT or a TCX — they are all read into the same model before being drawn.

What if a file has no elevation data?

The map and the stats table still work. The elevation chart simply skips any activity without altitude points.

Are my files uploaded to a server?

No. Everything runs in your browser. Your files never leave your device.

Compare two activities

Drop two activities to see both routes on a single map, their elevation profiles overlaid, and a side-by-side breakdown of distance, time, pace and elevation gain. Nothing is uploaded — everything runs in your browser.

Activity A

Drop a file or clickGPX, FIT or TCX

Activity B

Drop a file or clickGPX, FIT or TCX

How to compare two activities

1
Load activity A
Drop your first .gpx, .fit or .tcx file into slot A, or click to browse.
2
Load activity B
Add the second file into slot B. Both routes appear on the same map, colour-coded.
3
Read the comparison
Check the side-by-side table and the overlaid elevation profiles to spot the differences.

Frequently asked questions

Can I compare two runs on the same course?: Yes. Loading two activities recorded on the same route is the ideal use case — you immediately see which one was faster and where you gained or lost time.
Do the two files need the same format?: No. You can compare a GPX against a FIT or a TCX — they are all read into the same model before being drawn.
What if a file has no elevation data?: The map and the stats table still work. The elevation chart simply skips any activity without altitude points.
Are my files uploaded to a server?: No. Everything runs in your browser. Your files never leave your device.