For a truly comprehensive experience in 2026, you should dedicate at least two full days to Petra, though three is ideal for those who enjoy hiking. The site is vast, covering over 60 square kilometers. On Day 1, most visitors focus on the "Main Trail," which includes the Siq, the iconic Treasury, the Royal Tombs, and the Colonnaded Street. Day 2 is best reserved for the grueling but rewarding climb to the Monastery (Ad Deir) and the High Place of Sacrifice. A third day allows you to explore "Little Petra" or the Al-Khubtha trail for the famous "view from above" of the Treasury. Trying to see Petra in a single day is possible but physically exhausting, often requiring 15-20 kilometers of walking, which leaves little time to appreciate the Nabataean artistry. In 2026, with the popularity of "Petra by Night" (running Monday, Wednesday, and Thursday), having multiple nights in nearby Wadi Musa ensures you can experience the ruins both in the golden sunlight and under the glow of 1,500 candles.