One day on Jeju's east side, timed by the operator rather than by me
Geomunoreum, Manjanggul, Bijarim and Seongsan Ilchulbong all have a published duration — and all four are on the same page. So this route has no start times and a stay length at each stop instead. One thing is fixed: Geomunoreum's booking closes at 17:00 the day before.
Language
Planning a day on Jeju gets stuck in the same place every time: nobody tells you how long to spend anywhere. So most itineraries invent it.
This one does not. All four stops have a duration the operator publishes — and not across four different pages either. All four are on one page, the guide-service notice of the Jeju World Heritage Office.
Four properties of this day
The stay lengths are not mine
Every figure in the table above is one the operator publishes as a guided-walk duration, and all four sit on a single page. The panel renders them straight from it.
Only the booking is fixed
Geomunoreum is the only stop with a departure time, and its booking closes at 17:00 the day before. The other three you walk into as you arrive.
The longitude only increases, so nothing doubles back
126.72 to 126.77 to 126.81 to 126.94. The ends are 20.3 km apart in a straight line and no leg goes back west.
Three days a month break this route
Geomunoreum rests every Tuesday, Manjanggul on the first Wednesday, Seongsan Ilchulbong on the first Monday. Three different days, so they do not cover for each other.
Why there are no start times
This site's Seogwipo route gave up on the clock for the same reason: not to invent a figure nobody published. Here the situation is one layer better. The stay lengths are published; only the travel between them is not.
So each stop carries a durationMinutes and none carries a startTime. How many minutes it takes to drive from one to the next depends on the road and the day, and writing it down would smuggle in a claim no source makes.
🔵 What can be written is the distance. These are straight lines measured on the coordinates this site already holds: Geomunoreum to Manjanggul 9.7 km, Manjanggul to Bijarim 5.6 km, Bijarim to Seongsan Ilchulbong 12.0 km, and 20.3 km end to end. Geometry needs no source. It is neither a walking nor a driving distance.
Geomunoreum — the one fixed point in the day
Of the four, only this one takes a booking and only this one has a departure time. Walks leave every thirty minutes from 09:00 to 14:00, and that 14:00 slot is the last one you can join. Eleven departures a day, fifty people each.
Geomunoreum departure times
| Every day | 09:00every 30 min11 a daylast entry 14:00 |
|---|---|
| World Heritage guide service · Every day | 09:00–17:00 |
These are not opening and closing times but the span of departures, and that 14:00 slot is the last one you can join. Fifty people per departure. When you come out depends on which route you took, and the operator states that as a duration rather than a time. In bad weather the site closes completely.
Source: Jeju World Heritage Office — Geomunoreum. Walks depart 09:00-14:00 every thirty minutes, eleven a day, fifty people per departure; closed every Tuesday as a rest day for the site, and on Seollal and Chuseok themselves; closed completely in bad weather. Booking by phone or online until 17:00 the day before. Admission 2,000 won adult (1,600 group), 1,000 youth/soldier (800), 1,000 child (800); groups from 10, with a separate list of exemptions. Three routes: the summit course (unaccompanied, about 1.8 km, 1 hour), the crater course (with a guide, about 5.5 km, 2 hours 30), and the full course (about 10 km, 3 hours 30). The collapse trench is about 2 km long, 80-150 m wide and 15-30 m deep. · · Jeju World Heritage Office — heritage guide service. The Geomunoreum guide runs 09:00-17:00, meets at the visitor centre entrance, and is given as 1 hour for the summit course, 2 hours 30 for the crater course and 3 hours 30 for the ridge course. Note: the third route is called the full course on the Geomunoreum page and the ridge course here. ·
Booking closes at 17:00 the day before
Bookings are taken by telephone and online, up to 17:00 on the day before the walk. So this day actually begins the previous evening. It cannot be assembled on the morning itself — and if you drop Geomunoreum, the other three take no booking at all and can be reordered freely.
🔴 Every Tuesday is a rest day for the site and there are no walks. Nor on Seollal or Chuseok, and in bad weather it closes completely.
🔵 Changing course changes the shape of the day. The summit course is about 1.8 km, walked alone. The crater course is about 5.5 km and the full course about 10 km, and both of those are accompanied. What the table above budgets for is the summit course; pick either of the others and this becomes a day of two or three stops rather than four.
Manjanggul — 1 km of 7.4, and back again
9.7 km north of Geomunoreum in a straight line. The cave runs about 7.4 km, but the only entrance the public may use is the second, and from it you may walk 1 km. At the end stands a lava column about 7.6 m high, said to be the largest known anywhere — and that is also where you turn round.
The guided walk meets at the ticket office, between 09:00 and 16:00. It is free and signed up for on the spot.
Manjanggul admission
| Adult(ages 25 to 65) | ₩4,000 |
|---|---|
| Youth(youth and soldiers, ages 13 to 24) | ₩2,000 |
| Child(children aged 7 to 12) | ₩2,000 |
| Group (10 or more) · Group(groups of 10 or more, adult) | ₩3,000 |
| Group (10 or more) · Group(groups of 10 or more, youth and soldiers) | ₩1,500 |
| Group (10 or more) · Group(groups of 10 or more, children) | ₩1,500 |
🔴 No opening or closing time is published here. The operator's page carries the closing day, the fares and the size of the car park, but not the hours. So the practical ceiling on this stop is 16:00, when the guide service ends — which is also why this route puts Manjanggul straight after Geomunoreum.
🔵 It is dark inside and the floor is wet. The operator lists a torch and trainers as things to bring, plus a raincoat and a warm layer in the wet. High heels, pets and food brought in are all barred.
Bijarim — the stop that absorbs the slack
5.6 km from Manjanggul, the shortest leg on the route. The guided walk meets at the ticket office.
Bijarim opening hours
| Every day | 09:00–18:00last entry 17:00 |
|---|
The times above come from the Jeju Tourism Information Center's reply of 22 April 2024 in the Q&A panel of the same Visit Jeju page, not from its structured visitor information, which gives the ticketing deadline and year-round opening but no opening time at all. The reply is the only place the two appear together, and it adds that the ticket office confirmed entry is not permitted before ticketing opens.
🔵 It is the only one of the four with no regular closing day. If the earlier stops ran long, or you took one of Geomunoreum's longer courses, this is where the day gives or takes — dropping it does not break the route, and staying longer does not push against the next stop's deadline.
Seongsan Ilchulbong — the season sets the deadline
12.0 km from Bijarim, the longest leg and the furthest east.
Seongsan Ilchulbong opening hours
| 11·12·1·2 | 06:00–18:00last entry 17:00 |
|---|---|
| 3·4·9·10 | 05:00–19:00last entry 18:00 |
| 5·6·7·8 | 04:30–20:00last entry 19:00 |
Source: Visit Jeju — Seongsan Ilchulbong ·
The opening and closing times swing widely by season. In winter it opens later and shuts earlier; in summer it opens at 04:30. Since it is last, this table is the day's real deadline.
🔴 The guided walk meets at the summit rather than at the ticket office. The climb up is not inside what the table above budgets, so if you mean to take the guide, allow for the ascent separately.
Three days a month, and they do not overlap
Three days break this route, and they fall on three different weekdays.
| Stop | Closed |
|---|---|
| Geomunoreum | every Tuesday |
| Manjanggul | the first Wednesday of the month |
| Seongsan Ilchulbong | the first Monday of the month |
| Bijarim | none |
🔴 Had they all fallen on one day, the advice would be "avoid that day" and end there. Scattered as they are, three separate days a month have to be avoided — and in the first week of any month, Monday, Tuesday and Wednesday each knock out one stop in turn.
More on the same side
9.81 Park Jeju
The island you reach by boat from Seongsan harbour. The boat times set the length of the day, so it is better taken on its own than added to this one.
Secret Forest
A private forest path between Geomunoreum and Manjanggul. The loop takes about thirty minutes, so it fits if you have time in hand.
Seopjikoji
A coastal walk with Seongsan Ilchulbong in the background the whole way. It publishes no opening time, which makes it easy to add at the end.
Itinerary
Day 1 · West to east, following the longitude
The four sit in order of longitude, so nothing on this route doubles back. What sets the order is not a clock but one booking and the map — only Geomunoreum has a departure time, and the other three you walk into as you arrive.
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Last verified:
Official sources
- Fact check (2026-09-10): Jeju World Heritage Office — heritage guide service. All four guide services are on one page: Manjanggul 09:00-16:00, meeting at the ticket office, 1 hour; Seongsan Ilchulbong 09:00-16:00, meeting at the summit, 40 minutes; Geomunoreum 09:00-17:00, meeting at the visitor centre, 1 hour for the summit course, 2 hours 30 for the crater course and 3 hours 30 for the ridge course; Bijarim 09:00-16:00, meeting at the ticket office, 40 minutes. All four are open to any visitor.
- Fact check (2026-09-10): Jeju World Heritage Office — Geomunoreum. Walks depart 09:00-14:00 every thirty minutes, eleven a day, fifty people per departure; closed every Tuesday as a rest day for the site, and on Seollal and Chuseok themselves; closed completely in bad weather. Booking by phone or online until 17:00 the day before. Three routes: the summit course (unaccompanied, about 1.8 km, 1 hour), the crater course (with a guide, about 5.5 km, 2 hours 30) and the full course (about 10 km, 3 hours 30).
- Fact check (2026-09-10): Jeju World Heritage Office — Manjanggul (partly open). About 7.4 km long, but the public may use only the second entrance and may walk 1 km in. Closed the first Wednesday of each month. Adult admission 4,000 won. Parking free. Bring a torch and trainers, and a raincoat and warm jacket in the wet. No high heels, no pets, no food brought in.
- Fact check (2026-09-10): Visit Jeju — Seongsan Ilchulbong. Viewing hours run by season (Nov-Feb 06:00-18:00, Mar-Apr and Sep-Oct 05:00-19:00, May-Aug 04:30-20:00, with last admission an hour before each), and the regular closing day is the first Monday of each month.
- Fact check (2026-09-10): Visit Jeju — Bijarim. The visitor note reads open all year, with no regular closing day. The Q&A panel on the same page carries a 2024-04-22 reply from the Jeju Tourism Information Center giving operating hours of 09:00-18:00 with ticketing closing at 17:00.