While its massive backcountry trail system can make for an incredible extended stay, the unbridled beauty from basically any spot in the park coupled with easy access makes Zion a perfect one-day trip. However, if it’s your first visit, try to spend at least two or three nights and venture to both Zion Canyon and Kolob Canyons.
For the perfect road trip, combine a trip to Zion with these other national parks: Arches, Canyonlands, Bryce Canyon, Capitol Reef, and the north rim of the Grand Canyon.