Perms by GPS - Rider Instructions

Not all Perms can be validated by GPS. It is up to the organiser to choose whether or not to offer this, and AUK asks them to do a little preparation beforehand.

How can I tell if the Perm I want to ride can be validated by GPS? 

Check if the ride description includes this paragraph, if not then it's paper only, sorry. 

"This permanent event can be validated by GPS. This is an option selectable by you during entry. This means that you would submit a ridden tracklog in place of paper proofs of passage."

When you click on "Enter" you will see this screen

If you want GPS validation use the lower link.
The upper link is for conventional validation with paper Proof-of-Passage through the controls.

When you've completed your entry and paid you'll get an automated email from
Check in your Spam / Junk folders if you don't see it, and add that address to your safe senders list.

The email will be copied to the Organiser and will contain up to three links.

If the organiser has loaded routesheets and GPS track to help you navigate the route, there will be links to these.

On the last line of the email there will be a link through which you can upload your tracklog after the ride.
It goes without saying that you should keep this email until after you have uploaded the tracklog for this entry.

The uploader link is specific to a particular entry - you can't use it for any other ride, or for a second entry on the same ride.

The uploaded file will need to be a .gpx or .tcx file, or several such files zipped together.  There is a file size limit of 1Mb.

The tracklog uploader will also now accept (unzipped) Garmin FIT files and convert them to TCX before processing them.

Wahoo FIT file are not accepted, because Wahoo have recently moved to a new FIT2 format. 
Zipped FIT files may also cause problems even if they seem to have uploaded correctly.

For more on file size limits, and other upload problems see this page.

Once the file has been successfully uploaded, you and the organiser will get a confirmation email (from the same address as before), and the organiser will be able to validate your ride.  Be patient, they may be away, or busy, so it may not happen for a few days.