Hey @tonjewilliams, 
Thanks for your post. Our support team will need to take a closer look at this and see what is going on. 

I see you submitted a support ticket, #2962498; someone from our support team will get back to you as quickly as possible. Thank you for your patience!

Update from our support team: We are seeing the following error message when attempting to upload your activity: Time information is missing from file.
 
If upon attempting to upload a GPS file you see an error message telling you that your file does not contain GPS timestamps which means that your file is incompatible for upload to Strava. Your file likely contains only GPS data and no timestamp associated with each latitude and longitude coordinate.  Opening your file in a text editor might reveal something like this:

<trkpt lat="37.7808230" lon="-122.3956800">
<ele>5.7</ele>
</trkpt>

Without timestamps, it's impossible for Strava to calculate your speed and time on segments, so the files will be rejected upon upload. The best options to account for the activity that is failing to upload are to either ask a friend you recorded the activity with to share their original file for you to upload, invite you to the activity or to create a manual activity.
 
If you are attempting to upload a route, you can create a route by uploading a GPX file by following the directions here. 

You also have the option to create a route off of another user's activity or build the route by hand using our Route feature.