Three of Idaho's closest national parks (in neighboring states) have secured spots among the top 10 most family-friendly national parks in the United...
With a starting point in Twin Falls, Yellowstone is not the closest national park. Yellowstone is 253 miles away. There are 2 national parks closer to Twin Falls. It is most definitely time for another road trip.
The National Park Service says more than 940,000 people visited Yellowstone National Park in July, which is typically the park's busiest month for recreation visits.