Hallasan

One of the most popular national parks in all South Korea, and also the country's highest peak! There are two paths to get to the summit (Seongpanak and Gwaneumsa), and you need to make a reservation to be able to go up the mountain through any them. The path is all well marked, I would say it is not possible to get lost. It's a hard way up, and you will probably get wet but the experience it's worth the effort.

Did not managed to hike up the mountain but it's nice having to see snow fall from the previous night. Definitely a place to visit come winter...

Decent hike, but not the most scenic (spoiled by the Rocky Mountains). Did the hike up via the Seongpanak Trail since the other trail is closed for construction. This does mean that the number of permits available goes pretty quick. You can reserve (free) a month in advance. We had forgot to reserve, but managed to snag a reservation at 3am the morning of due to a cancellation. There's also time limits in place to ensure that people finish the hike before sunset so this means that if you don't get past the top shelter by 11:30am, you won't be permitted to go to the peak. You'll also need some ID with your reservation QR code for entrance at the start. Paid parking (1000 won) is very limited (70 some cars) and was filled when we got there at 06:15. Ended up parking at the Jeju-do Livestock Life Research Institute Jeju Horse Pastureland parking lot and taking the bus back (bus was packed full and some people had to wait for the next bus).

We brought our girls to the foot of the mountain to experience snow. It was so pretty and we love it! It was chilling and we had fun playing snow for a while. The road and the trees was filled with snow, and it looks beautiful ❄️

My wife and I have very good memories on this mountain. We saw many cute animals, including deer and birds. They all live freely here. Climbing the mountain is very hard, but the scenery after climbing the mountain is very beautiful and worth it. Many foreigners come here to climb the mountain. This is a must-visit place when traveling to Korea. Highly recommended.

A must when you made it to Jeju already and the vibe is there but tbh it is not as spectacular as Alps or other mountains over 2k m. No surprise, it is just one peak. Went there with my son and you can do it way faster than most of the guids say. But be careful, despite marking on the maps there is NO drinking WATER available on the entire trail from Gwaneumsa to Seongpanak.

We were a group of 4 friends from Nepal, currently working in Korea. During our holidays, we decided to explore Jeju Island, and climbing Hallasan was one of the best parts of our trip. The hike was a bit challenging, especially near the summit, but totally worth it. The views from the top were amazing — you can see clouds all around and feel like you’re really above everything. It was peaceful and beautiful. If you’re in Jeju and like nature or hiking, I definitely recommend trying the Hallasan summit. Just make sure to start early and carry enough water and snacks. Great experience overall!

The trail is easy, the scenery is nice, the only disadvantage is that you can't watch the sunset or sunrise because the curfew is strict. And you need to reserve the ticket to enter and they have limited number per day, so please do remember that. I've been hiking a lot, even more crowded mountains but this mountain is a special case.