•Caltopo: This site is the ultimate trip-planning site. Add lines and use the analysis function to see the distance, elevation change, and more
•Solar Calculator: Use this tool to see on a map where the sun will be setting and rising based on your location.
•National Park Service Unit Visitation Statistics: See which months National Parks are at their busiest and emptiest. Use the green-yellow-red color ramp for maximal effect.
•Current Snow Depths: On the right side click on snow date and then check snow depth for current snow depth anywhere in the US. Accuracy is limited of course, but it gives you a pretty good idea.