Problem: Unable to Add a GPX File in ArcGIS Online Map Viewer

Description

When attempting to add a GPX file to a web map in ArcGIS Online Map Viewer, ArcGIS Online becomes unresponsive or experiences slow performance, and a warning pop-up is displayed in the browser. The image below shows the warning displayed when a GPX file (GPX Map) is added to a web map in Map Viewer.

Image of an error message pop-up in the Google Chrome browser

Cause

This issue occurs when the GPX file is too large. Larger file sizes may require longer processing times, depending on the connectivity and processing capabilities of the browser and machine.

Solution or Workaround

Convert the GPX file to a feature layer in ArcGIS Pro using the GPX To Features tool, and publish it as a hosted feature layer in ArcGIS Online. To do so, follow the steps below.

Note: 
It is a known limitation that GPX files cannot be added as items through the My Content tab on the Content page. They can only be added to ArcGIS Online by adding the file in Map Viewer. Refer to ArcGIS Online: GPX files for more information.

Launch ArcGIS Pro, create a project , and log in to ArcGIS Online with privileges to publish hosted feature layers.
In the Geoprocessing pane, search for the GPX To Features tool. Refer to ArcGIS Pro: Run a tool in the Geoprocessing pane for steps to do this.
In the GPX To Features pane, configure the Parameters tab as follows:
1. For Input GPX File, click Browse…. to browse and select the GPX file.
2. Provide a name for Output Feature class, and click Browse…. to save the feature in the desired location.
3. Click Run. The new dataset created by the GPX To Features tool is automatically added to the map.

Publish the feature layer as a hosted feature layer to ArcGIS Online. Refer to ArcGIS Pro: Share a web feature layer for steps to do this.
Log in to ArcGIS Online and click Content > My Content.
Navigate to the published hosted tile layer, click More Options , and click Open in Map Viewer.