Photos taken within the AllTrails app and saved to the photo roll will be saved without lat/long EXIF info because of an Apple restriction built into iOS. However, we associate the latitude/longitude of the phone, at the time the photo is taken, as part of the AllTrails recording file. When the photo is synced back to AllTrails, you will see a latitude/longitude for it.
Photos taken outside the AllTrails app will have normal EXIF data, which will be read when you add the photo to a recording on your phone or upload the photo to https://www.alltrails.com on the web. Photos taken inside the AllTrails app, and then uploaded on the website will NOT have latitude/longitude info because the files do not have EXIF data, and they are not associated with the info from the recoding.
NOTE: When adding photos that were taken outside the AllTrails app to the website or app, the photos must be in JPEG format in order to contain latitude/longitude data.