I have put together a page of Elevation profiles for trails in Big Bend National Park. These profiles were generated from logged GPS files and exported from Garmin Mapsource© These Elevation profiles for trails in Big Bend National Park are great for planning or just keeping a record. Some of these are Round trip and some are one way profiles. It is easy to determine based on the profile or caption. This should give you a pretty good idea of the grade when you are planning a hike. Knowing the grade can give you an idea of what speed you should be able to traverse a trail. In many cases, a steep uphill grade may reduce your hiking speed by two thirds. That information along with weather and pack weight help plan a practical distance to cover. In addition, for those who keep personal logs, you can establish performance under variable conditions to further improve planning. I will continue to add profiles as I record the tracks. Check back or bookmark this page for future reference. If there a particular profile you’d like to see, request it in the comment section. I may have it archived somewhere or know someone who has logged a track that I have not been able to do.