Detailed itinerary 👇🏼 Your ultimate USA roadtrip itinerary from Wyoming to South Dakota - Save for your next adventure! 🦊 Yellowstone National Park (WY) 🟢 Must-see: Grand Prismatic Spring, Old Faithful, Lamar Valley for wildlife 🟢 Take the Fairy Falls Trail for the best Grand Prismatic view 🟢 Pro tip: Visit early or late in the day to avoid crowds & spot wildlife 🟢 Best time: June to September for full road access 🏨 Stay in one of Yellowstone’s in-park lodges 🏔️ Grand Teton National Par