Portions of the GDT within National Parks close during the winter but most of the trail remains open all year round. However, the GDT is not designed, nor intended, for snow travel. When the trail is covered in snow, finding it may be impossible. You’ll have to be an excellent navigator to follow the trail corridor when it’s covered in snow. 

Wildfire and flooding can also temporarily close sections of the GDT.  See our Trail Conditions and Closures page for recent information.