100 MB GPX sample

A GPX file of exactly 104,857,600 bytes. It is a valid GPS Exchange Format file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 100 MB sample, test or dummy GPX file.

sample-gpx-100mb.gpx

100 MB104,857,600 bytes

Download 100 MB GPX

Created in your browser and, in browsers that can stream to disk, sent straight to your downloads list; this can take a minute. No sign-up.

Type: application/gpx+xml
SHA-256: ce4c8bf581e3a354e97960a1f48d957d3128b9426d9a5b0d714a0383ce75518f
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A GPX 1.1 file with metadata, one waypoint and a track of 1,022,370 points five seconds apart, each with elevation and a UTC timestamp. An XML comment before the closing tags brings the file to the exact size.

Track points	1,022,370
Waypoints	1
GPX version	1.1
Interval	5 seconds
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-gpx-100mb.gpx, exactly as they appear in the file.

00000000  3c 3f 78 6d 6c 20 76 65  72 73 69 6f 6e 3d 22 31 |<?xml version="1|
00000010  2e 30 22 20 65 6e 63 6f  64 69 6e 67 3d 22 55 54 |.0" encoding="UT|
00000020  46 2d 38 22 3f 3e 0a 3c  67 70 78 20 76 65 72 73 |F-8"?>.<gpx vers|
00000030  69 6f 6e 3d 22 31 2e 31  22 20 63 72 65 61 74 6f |ion="1.1" creato|

Preview

Creates the file in your browser and shows the first 64 KB of it.

Where 100 MB matters

A 104,857,600-byte file: the request-body limit of Cloudflare's Free and Pro plans, and the size above which GitHub rejects a file outright.

All 100 MB sample files

Use this file for

Finding the first upload limit in a new stack
Testing activity upload in fitness and mapping apps
Checking distance, speed and elevation calculations

Testing notes for GPX

Devices add heart rate, cadence and temperature in extension elements from other namespaces. A parser must skip what it does not recognise.
GPX writes latitude before longitude, the opposite of GeoJSON and KML. Converters that copy the numbers across without swapping them put tracks in the wrong place.

GPX format reference

Technical details

File name	sample-gpx-100mb.gpx
Format	GPX (GPS Exchange Format)
Extension	.gpx
MIME type	application/gpx+xml
Size	104,857,600 bytes (100 MB)
Kind	Text
SHA-256	ce4c8bf581e3a354e97960a1f48d957d3128b9426d9a5b0d714a0383ce75518f
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	GIS

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-gpx-100mb.gpx     # Linux
shasum -a 256 sample-gpx-100mb.gpx # macOS

On Windows, run Get-FileHash sample-gpx-100mb.gpx -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 100 MB?: Yes. It is 104,857,600 bytes, which is 100 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 100 MB GPX file?: A GPX 1.1 file with metadata, one waypoint and a track of 1,022,370 points five seconds apart, each with elevation and a UTC timestamp. An XML comment before the closing tags brings the file to the exact size.
What do the GPX samples contain?: One waypoint and one track with a single segment: a fictional walk that starts in Lisbon, with a point every five seconds, each carrying an elevation and a UTC time.

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