I am so confused...
So while you can record a GPS track in the mobile app, you will want to head to the website in order to add a new trail or run to the site! We ask for a bit of description and most folks find it easiest to hop on their computer to add/edit trails as opposed to trying to type all the info in from their phone. More information about how to share your trails can be found here: https://www.trailrunproject.com/mapping
Please just let me know if I can help with any additional questions!