See the image below for a course detour caused by flooding in Inlet Bay. This detour is in play for the Summer 2017 stage.

For the GPX file, if it doesn't seem to be working or is opening in your browser as a bunch of mumbo jumbo, I suggest navigating to your Downloads folder and saving the file with a ".gpx" extension such as "Four-Seasons-of-Horsetooth.gpx" and not the ".xml" extension it may be giving you. Then upload the .gpx version to your device.