I went to Incheon Ganghwa Goryeosan Azalea Festival in April, the area near the top of the mountain was covered by azalea, it was such a pretty sight that I have to recommend this place after I come back.
You can go to Ganghwa Island from Sinchon or Hongdae using bus 3000, and get off the bus at Ganghwa Bus Terminal, and change for other buses to the starting point of the hiking routes (starting points marked with blue on the map above, a total of 5 trails). Because my friend is only available on weekend, so we went on a Saturday, there were many people and many cars, so there were traffic congestions and queues for buses, so please prepare more time for everything if you are going on a weekend.
When you arrive, you will see a timetable like the one below, the column on the left is the bus for starting point of route 1, the right hand side one is for route 2 to 5.
If you are going on a day when the bus terminal is packed with people, I suggest you do what I did, just get on the first bus you can squeeze on, since any one of the course can get you to the flowers. I took a bus to courses 2 to 5, so initially we planned to go up the hill via course 2, and get down via course 1 (since the starting point of course 1 is Ganghwa Historical Museum, there are also stalls and markets there during the festival, but when we got up, we forgot about the path and just followed the flowers, so we ended up getting downhill via course 4). Ganghwa is also famous for dolmens, and there are some along course 4, but those in the Dolmen Site probably looks more like UNESCO heritage haha.
These are the dolmens along the way down course 4.
Before we started on the hike, we wondered if it would be difficult, since we could not find a lot of detailed information about it. Now that I have finished it, it is not very difficult, just about 1 hour uphill and not very steep.
I was worried about being hungry along the way, but actually there are food stalls at the starting point of course 2 and also on hill top, so you will be fine even if you do not bring any food with you.
This is a specialty food 쑥개떡 from Ganghwa, my friend loved it, I found it a bit bland for me, so you can try and see if you like it next time you go to Ganghwa.