Can't upload from Garmin 1040 Edge to Connect

You can try a 3rd party tool, such as FIT File Tools. Use the section remover without any adjustments. If that still doesn't work, zip then attach the fit file here. We will take a look at it to see if it is repairable. 

• Zip the file, then in a reply post Insert >> Image/video/file >> click Upload >> browse for file >> OK.
• Or upload the fit file to a reputable file sharing service, such as OneDrive, Google Drive, Dropbox, make the file public, then paste a link to the file in your post.
• Or if you'd rather your activity remained private, you can send me a private message.

I tried FIT File Tools and that didn't work either. I'm attaching a zip file [solved]

Sems there was a 40-minute time gap with missing timestamps. When it picked up again, there was a problem where the distance was not in ascending order.

Still some data missing, but this will work - [solved]

Since you used an HRM-Pro, possible this caused the corruption. Some things to note with this HRM. 

• Use the HRM download feature only after an activity where it was not possible to wear the watch
• Update the HRM firmware Updating Software on the HRM-Pro/Pro Plus
• During the HRM-Pro download process keep the strap and watch in close proximity
• If issues persist even after the firmware update, contact Garmin Support
• More here about corrupted HR data: Corrupt FIT File Repair Requests

I was able to upload this file, but unfortunately only half the distance (35mi). 

Thanks for your help.

See comments regarding, HRM-Pro.