The island that ends the peninsula — read on foot, in the one month between typhoons and tour buses.
Peak-season Jeju is a queue at Seongsan and a tour bus at Cheonjiyeon. Winter Jeju is wind. July–August is heat and rain. What you have left is September — the month locals quietly reclaim.
By early September the typhoon season is winding down, the summer crowds have flown home to Seoul, and the walking paths — Olle in particular — are as empty as they will be all year. Daytime temperatures sit in the 22–26 °C range, mornings are cool, the wind off the East Sea is steady but not punishing, and the coastal cliffs are still summer-green with the first hints of autumn in the oreum grass.
The other reason to come now is that Hallasan's Yeongsil route hits peak crimson four to five weeks before Seoraksan does. If you're a foreign hiker with only one autumn week in Korea, September on Jeju gives you both coast and high mountain in the same trip, without competing with the peninsula's foliage crowds.
This is a walking guide to that month, written for foreign travellers who want three days of coastal walking on the eastern Olle and one day on the mountain. No tour bus. No pinned Instagram spots. Roughly 60 kilometres on foot across four days.
Jeju has 27 Olle routes and two summit trails on Hallasan. This issue is not a survey. It is a specific four-day sequence on Jeju's eastern side, chosen for September weather and for how the routes teach the island in a coherent order.
Twenty-seven Olle routes circle Jeju for about 437 kilometres. Trying to walk all of them in one trip is how travellers burn out on Jeju. What we recommend instead is a slow eastern arc — three of the finest coastal Olle routes end-to-end, plus a single high-mountain day on Hallasan's western flank at the height of its foliage.
The four selected days:
Suh Myung-sook opened Olle Route 01 in September 2007. Every route since has been numbered outward from this coast. Walking Route 01 first is not obligatory — it is only correct.
You begin in Siheung-ri, a low farming village on the north-eastern edge of the island. The first kilometre is inland — tangerine groves, stone walls, low fields of buckwheat. Then the trail lifts onto Malmi Oreum, one of Jeju's 368 volcanic cones, and for the first time you understand why people talk about the island's oreum as a landscape unto itself. The cone is only 146 metres high, but its rim gives you the whole northern coast in one turn of the head — Udo Island offshore, the wind farms on the ridge behind you, the beginning of a long walk.
From Malmi the trail descends to Jongdal-ri, then hugs the coast west and south past small harbours, past a rocky reef where haenyeo (women divers) still work in season, and finally out to Gwangchigi Beach — a long crescent of coarse sand facing Seongsan Ilchulbong across the water. This is where Route 01 ends and Route 02 begins. Sit down for a bowl of omok-guk (fish-cake soup) at one of the beach stalls before you walk any further.
Route 01 is deliberately gentle. It is the route that trains you to walk Olle — its rhythms, its trail markings (blue and orange arrows, ribbons tied to trees), its village etiquette. Everything after this day builds on it.
Most travellers see Seongsan Ilchulbong from a tour bus, an hour in, three-hundred photos out. Olle Route 02 walks past its base, then earns the wider view from a low volcanic ridge inland. The difference is the whole point of the walk.
Route 02 begins where Route 01 ended — Gwangchigi Beach — and traces the inland edge of an old reservoir before climbing the first of the day's two low oreum, Siksanbong (식산봉, 66 m). Small, quick, and mostly a warm-up. From its top, the tidal channel and the reeds below give you the day's first honest quiet.
The middle of the route is inland reservoir-dyke path (내수면 둑방길) and low farmland. Very few foreigners walk this section — the tour buses have already turned back toward Seongsan Port for the Udo ferry — and you'll pass more herons than people. The trail then lifts you onto the day's second climb: Daesusanbong (대수산봉, 137 m). This is the moment. From the summit deck the whole eastern coast opens — Ilchulbong to the north-east, Udo offshore, the reef line curving south toward Onpyeong. It is a better view of Seongsan than climbing Seongsan gives you.
The final third of the walk descends to Honinji (혼인지) — a small spring-fed pond around which, according to Jeju's founding legend, the island's three progenitors met and married their three brides from across the sea. The pond itself takes ten quiet minutes. Then the trail cuts down through Onpyeong-ri, a small fishing village, to the coast. This is where heuk-dwaeji (Jeju black pig) belly is at its best, and where the day's walking rewards a slower dinner than you had planned.
If you have climbed Ilchulbong on a previous trip, skip it — Daesusanbong from Olle 02 gives you the wider composition and none of the queue. If it is your first Jeju visit, climb Ilchulbong early (before 8 a.m.) as a separate morning, then walk Olle 02 later.
Between Daesusanbong and Onpyeong you may pass grazing Jeju horses — small, thick-necked, calm. They are working animals, not petting-zoo stock. Watch quietly and walk on.
Route 21 was the last route to open. It runs from the Haenyeo Museum in Hado-ri north-west to Jongdal-ri — where Route 01 began. Walk it on your third day and you have quietly circled the island's eastern tip.
This is our favourite of the three. It is shorter (11.1 km), and less known than the others — which means for two hours in the middle of the day you have the coast almost entirely to yourself. The first section passes the Haenyeo Museum (해녀박물관), Korea's only museum dedicated to Jeju's freediving women. If you visit only one museum on Jeju, this is it — an honest account of a working culture that is genuinely disappearing and which the island is trying to hold onto without turning into a tourist product.
From the museum the trail moves along coastal fields and low farmland — tidal pools, haenyeo shelters, one or two small islands offshore, and, if the tide is right, a stretch of black basalt reef that is unlike anything on the peninsula. The route is mostly flat, but roughly two-thirds of the way through it climbs Jimibong (지미봉, 165.8 m) — a horseshoe-shaped oreum whose summit gives you the whole north-eastern coast in one turn of the head, Udo directly in front. The climb is short but steep. There is a signed bypass at the base for anyone who wants to skip it and stay on the flat.
From Jimibong the trail descends into Jongdal-ri and closes exactly where Route 01 began. Bring a snack — one small café near the midpoint opens irregularly; do not rely on it for lunch.
You do not walk Jeju to see everything on the island. You walk Jeju to notice what one particular day of it feels like. — editorial refrain, Route 21
The summit at Baengnokdam Crater requires a reserved permit and 4–5 hours of steady climbing. The Yeongsil trail requires neither and is arguably more beautiful for foliage.
Yeongsil (영실) is one of two "no-permit" Hallasan trails that climb high without going to the summit crater. From the trailhead at the Yeongsil rest area (영실휴게소, ~1,280 m), the path climbs 5.8 km to the Witse Oreum shelter at ~1,700 m — steady, not brutal, and by mid-September the entire ascent is inside a corridor of Korean maple, mountain ash, and rowan in early flame. Public bus 240 from Jeju City drops you at the ticket office 1 km below the trailhead; walk up or take a short local shuttle to the rest area proper.
The route's signature feature is the Yeongsil rock pillars (영실기암) — a vast basalt cliff-face of five hundred vertical columns that appear halfway up the trail. Korean folklore calls them "the five hundred generals". They are visible from below on clear mornings and gain another dimension as you climb past their base.
From Witse Oreum shelter the summit crater is another 1.3 km climb, but that section requires the permit. Most walkers stop at Witse, eat a packed lunch on the wooden deck with the crater's summit ridge in the near distance, and walk back down the way they came. Total round trip: 4–5 hours, ~12 km.
Baengnokdam — the crater lake at Hallasan's summit — is accessible only via the Seongpanak or Gwaneumsa trails, both of which require a same-day-summit reservation booked online no later than the day prior.
The two summit trails are:
The elegant way to do this if you have a full day and a driver: go up Gwaneumsa, come down Seongpanak (or the reverse), traversing the crater rim without repeating a single step. Total ~18 km, 9–10 hours on the mountain, and no daylight to spare in September.
If a full summit day is more than you want to add to a coastal-focused trip, the Yeongsil route on Day 4 is the honest choice. Hallasan is not less itself for not being summited on this trip. The mountain will still be there.
Poor rice soil, black pigs in the yards, women divers in the sea, tangerines instead of apples on the trees. What was left is a cuisine that never really tried to be Korean and never had to. Two dishes anchor it. The rest circles them.
If you take one meal seriously on the east side, take it at a haenyeo direct-sale hall — where the day's abalone, sea urchin, conch, and sea cucumber come from the reef fifty metres away, delivered by the women who dived for them that morning. If you take two meals seriously, add a village black-pig grill, cooked over charcoal at the table with radish kimchi and shrimp fermentation for dipping.
Those two — the reef and the pig — are the honest table of eastern Jeju. What follows is where to eat them, what to order, and the smaller dishes that fill in around them.
A · The SeaThe haenyeo (해녀) are Jeju's freediving women — a matrilineal harvest culture of women who dive up to twenty metres on a single breath, without tanks, for shellfish and seaweed. UNESCO inscribed the practice on the Representative List of the Intangible Cultural Heritage of Humanity in 2016. Decades ago there were tens of thousands of active haenyeo on Jeju; today around 3,200 remain, most of them well into their 70s and 80s. The east side of the island — Hado-ri, Sehwa-ri, Woljeong — is where the culture is still working, not preserved.
In September the reef is full. This is the month for:
Jeonbok (전복) — abalone, sliced thin over rice or briefly grilled with butter. Sweet, iron-y, expensive.
Sora (소라) — top-shell conch, boiled and cut into chewy discs, dipped in gochujang.
Seongge (성게) — sea urchin, orange and briny, served over rice or in a clear broth (성게미역국).
Haesam (해삼) — sea cucumber, sliced raw with sesame oil and salt. Firm, oceanic, an acquired texture.
Ppulsora (뿔소라) — horned turban shell, larger than sora, often eaten raw at the diver's own table.
Momguk (몸국) — a Jeju-specific pork-broth soup with mom seaweed. Filling, salty, ancient.
Everything on the plate came from the sea I can see from this window. That is the only guarantee I make. — overheard, Hado-ri direct-sale hall
The most honest option. Communal tables, no printed menu, cash only. Point at what the woman at the next table is eating. Open roughly 10:00–19:00, closed the third Wednesday of each month. Expect ₩30–60,000 per person for a proper haenyeo spread.
Every 5th day (dates ending 0 and 5). Best morning stop after Olle 21. Buy peeled sora and boiled abalone directly from the haenyeo who dove that morning. Eat standing at the stall with soy-vinegar dipping sauce.
Slightly more visitor-facing, but the cooperative model is real and the seongge-miyeokguk (sea urchin seaweed soup) is the best on the east side. Reserve ahead in peak season.
Note · Some haenyeo halls sell hoe (raw fish) by weight from a tank rather than by menu. Ask the price per kg before pointing. Small octopus (문어) and rockfish (우럭) are fair value in September; abalone stays expensive year-round.
The Jeju heuk-dwaeji (흑돼지) is a genetically distinct pig. Small, black-bristled, raised in the villages long before it became a menu item — historically fed on kitchen scraps and often kept adjacent to the outhouse (a practice that gave rise to Jeju's famous dwaeji byeonso, or "pig toilet," now more a museum piece than a working system). What matters for the table: the fat renders sweeter and the meat carries a slight, honest gaminess that mainland pork does not.
Two ways it appears on the east side. Both are worth doing:
Ordered by weight, usually a full geun (about 600 g) at a time, cut into slabs three to four centimetres thick. Grilled slowly over live charcoal at the table. Served with melchi-jeot (멜젓) — a small dish of anchovy fermentation bubbling on the corner of the grill, into which you dip each bite. This melchi-jeot dip is Jeju-specific — mainland Korea rarely serves it — and it is the reason to eat heuk-dwaeji here rather than back in Seoul.
Cold-water boiled pork belly, sliced thick, served plain on a wooden cutting board (dombe). Eaten with saeujeot (fermented shrimp) or a light kimchi. Less theatrical than the grill, more common at village weddings and 60th-birthday feasts, and — if it's done well — arguably the more honest of the two preparations. Ask which nearby restaurant serves dombe-gogi; a village will usually name one specific place.
Three or four family-run 근고기 restaurants in a two-block radius of the Olle 02 end point. All charcoal, all thick-cut, all served with melchi-jeot. Prices around ₩22–28,000 per geun. Ask the driver for whichever is open — rotation is unofficial.
Two grills within a short walk of the Sehwa harbour. Locals split roughly 50/50 on which is better. Both do a proper melchi-jeot. Reservations rarely needed on weekdays.
An entire street of Jeju black-pig specialists near Jeju City Hall. Denser tourist traffic than the villages, but if you're overnighting in the city before the Hallasan Yeongsil day, it's the practical choice. Look for shops with live charcoal, not gas.
Order tip · If it's just the two of you, ask for half a geun of ogyeopsal (오겹살, five-layer belly) and half of moksal (목살, shoulder) — the belly for the fat, the shoulder for the flavour. Plus a bottle of Hallasan Soju, which is what Jeju drinks with its own pig.
Smaller dishes, the same island — for the mornings, the walking days, and the moments between the two big tables.
Fish-cake soup, clear-broth, served at the beach stalls all along Gwangchigi. What you eat when you finish Route 01. Warms fingers before it warms anything else. ₩7–9,000.
Buckwheat crêpe wrapped around seasoned white radish. Cold, chewy, faintly sweet. Sehwa 5-day market and Seongsan traditional market both sell it. Under ₩2,000 each.
Jeju's signature citrus — knobby-topped, sweeter than mandarin. Harvest runs December through March. In September you'll see the fruit still green on the trees along Olle 01 and 02. Come back in mid-winter for the real thing.
Pork-bone broth thickened with mom seaweed — a distinctly Jeju soup, once made for weddings and 60th-birthday feasts, now served in a handful of village kitchens. Deeply savoury, faintly briny.
Knife-cut wheat noodles in Jeju-style pork-bone broth (고기국수), topped with sliced pork belly and green onion. Not delicate. Not trying to be. Under ₩10,000 in almost every village on the east side.
Jeju horse meat. Served raw (yukhoe) or grilled. A regional tradition tied to the island's Mongol-era horse-breeding history. Not for everyone; we don't recommend seeking it out, but it exists honestly and says something about the island.
The drink · Hallasan Soju is what Jeju drinks with all of the above. Milder than mainland Chamisul, less sweet than Jinro Toban. Ask for the green bottle labelled 한라산; the "Original" 21% is what the locals order.
Private driver, English-speaking, transports your luggage between accommodations, arranges village lunches, and handles the Hallasan Yeongsil bus logistics. You walk self-guided with our printed Jeju guidebook. Four days east-side Olle + Hallasan.
Enquire — from ₩1.8M / 2 pax dr.kim@ultaricompany.com