Each of the five Yellowstone park entrances has its own personality. The North Entrance (Gardiner) and Northeast Entrance (Cooke City) are both open year round to vehicles. Gardiner is your easiest access point from the Bozeman area. During the winter, you can only get to the Northeast Entrance at Cooke City by driving the park road through the Lamar Valley. But in summer you can also drive the Beartooth Highway—famous for winding roads, sheer drops, and unbelievable views.
The West Entrance (West Yellowstone) is typically open to cars from April 21 to October 31. But many tour operators traveling over snow will enter the park here all year, since it’s quick to get to famous points like Old Faithful and Midway Geyser Basin. The South Entrance brings visitors in through Grand Teton National Park, and the remote East Entrance gives you a taste of the Wild West with its historic entrance station.
North Entrance: Open year-round
Northeast Entrance: Open year-round
East Entrance: Open May 5 - October 31
South Entrance: Open May 12 - October 31
West Entrance: Open April 21- October 31