From this page you can:
Log in here to create a new application, continue a previously saved application, or update your trail information:
If this is your first application, you must first create a user account. Be sure to write down your User Name and Password! No record is kept of this private information.
See application instructions and requirements for NRT nominations through the Department of Interior process
See a preview of the online NRT database to inform trail managers of the information and documents required for new applications as well as for trail updates. You may use this as a checklist to gather data for the online application. Basic information is entered on the database website, and supporting materials (maps, photos, etc.) can be uploaded but must be in standard electronic formats.
This application process is for trails on state, local, or private land, OR on federal land (outside the US Department of Agriculture). If your trail is on National Forest, National Grassland, or other land managed by the Department of Agriculture, see the USDA Application Process for NRTs.