Yes, you can easily drive around the entire island of Aruba in a single day, as the island is only about 20 miles long and 6 miles wide. A non-stop loop of the main coastal roads takes roughly 2 to 3 hours. However, to truly experience the "One Happy Island," you should plan for a full 8-to-10-hour day. This allows time to explore the calm, turquoise waters of the west coast (Eagle Beach and Palm Beach), visit the California Lighthouse at the northern tip, and then navigate the rugged, desert-like terrain of Arikok National Park on the east side. Note that while the main roads are paved and easy to navigate, reaching certain landmarks like the Natural Pool (Conchi) requires a 4x4 vehicle and more time. A popular one-day itinerary typically starts in the colorful capital of Oranjestad, heads north to the lighthouse, and finishes with a sunset at Baby Beach on the southern tip, making a rental car the most efficient way to see all of Aruba's diverse landscapes in a single sun-filled journey.