Jackson Hole is south of Yellowstone National Park. The closest park entrance is the south entrance, which is 57 miles away. The drive takes about an hour and 15 minutes without any traffic, but remember, if you’re visiting in winter, that ice and snow can make the drive take much longer. The south entrance is usually open year-round, but it may still close temporarily during heavy storms.
However, if you’d like to explore a national park during your Jackson Hole bachelorette party, you could instead head to Grand Teton National Park. The southern entrance to the park is 12 miles north of Jackson, and the drive takes about 20 minutes. But remember that the distance to where you want to go in Grand Teton National Park, may be a little further. For example, driving to popular Jenny Lake takes about 30-35 minutes from Jackson, depending on traffic.