Fira to Oia is a 10 km trek offering diverse landscapes of mountains, volcanos, meadows and villages alongside cobbled pathways, minor hike trails and muddy paths. Usually, this walk takes 5 hours; however, you can take a detour to explore Skaros Rock, which will take another hour. This trek is perfect for beginners, with its easy trail and directions.
If you start from Oia towards Fira, you will have to walk uphill a lot more than walking from Fira to Oia, so you can choose your starting point accordingly. On your way, you will end up witnessing the spectacular blue and white Santorini landscapes merging into the sea.