When is peak autumn foliage at Seoraksan?
Peak autumn foliage at Seoraksan reliably takes place between October 20 and October 25. Autumn in South Korea begins earlier in this northeastern mountain chain than anywhere else on the peninsula, as cooler northern air turns the high-elevation deciduous canopies before colors sweep southward toward Jirisan and Hallasan.
Seoraksan National Park (설악산 국립공원) is a mountain region home to Korea's third-highest peak and an established UNESCO Biosphere Reserve, renowned for dramatic granite peaks, deep forested ravines, and autumn foliage displays. Each year in early September, the Korea Tourism Organization releases its seasonal leaf forecast in partnership with weather service agencies such as Weatheri Inc., as published on VisitKorea.
First foliage is officially recorded when roughly twenty percent of the mountain has turned color. Historical forecast records reported on VisitKorea note that initial foliage begins around September 30 to October 3 at upper elevations. Peak foliage is declared when eighty percent of the park displays vibrant hues. In 2025, peak color was registered around October 23, while 2026 forecasts projected peak conditions around October 25. If you visit during the first half of October, you will find color along high ridges and upper crags, whereas valley walks near the park gates show their richest colors during late October.
Which entrance gate and trails should you choose for autumn leaves?
Outer Seorak through the Seorak-dong gate in Sokcho (속초) is the primary access point for classic viewpoints and day hikes, while Southern Seorak at Osaek provides gentle riverside boardwalks. The mountain is geographically divided into Outer Seorak, Inner Seorak, and Southern Seorak, each offering distinctly different hiking conditions during October.
Outer Seorak, located along Seoraksan-ro in Sokcho, serves as the main entrance for most travellers based in town. Inside this gate you can visit Sinheungsa Temple (신흥사) and walk toward Biseondae Rock or Ulsanbawi Rock (울산바위). Ulsanbawi consists of six massive granite peaks rising 900 meters above sea level and takes roughly three hours to reach from Sogongwon Park, delivering panoramic views of color-filled valleys beneath sheer cliff walls. Outer Seorak also houses the Seoraksan Cable Car, which accommodates up to 50 passengers and glides 700 meters up the mountainside in about 10 minutes to Gwongeumseong Fortress (권금성), an ancient stone fortification 800 meters above sea level offering sweeping views of Outer Seorak and the East Sea.
Southern Seorak (남설악), situated near Osaek in Yangyang, is suited for visitors who prefer gentle walking trails over steep mountain climbs. The Yongsopokpo Trail begins at the Yaksuteo Information Center and extends 3.2 kilometers along the valley to Yongsopokpo Falls, as documented on VisitKorea. The path takes about one hour one way and relies on flat wooden boardwalks, making it manageable for walkers of all fitness levels. Southern Seorak also provides the starting point for the steep Daecheongbong Trail, a demanding 5-kilometer climb from Namseorak Information Center that takes approximately four hours one way to reach Seoraksan's highest summit at 1,708 meters.
How early should you arrive at the park entrance during October?
You should plan to arrive at the Seorak-dong park gate before 07:00 or 07:30 during the peak October season. National park trails open as early as 03:00 during summer entry schedules and 04:00 during winter entry schedules, meaning committed hikers set out long before sunrise.
During the fall foliage season and on weekends, there are many tourists along Seoraksan-ro, so visitors are advised to plan ahead. Arriving early ensures you can drive in without extended delays and secure a spot in the primary parking lots near the gate. Parking fees at Outer Seorak are 5,000 won for small vehicles during peak season and 7,500 won for large vehicles, while parking near the cable car facility is listed at 6,000 won for regular passenger vehicles. Park admission fees at Outer Seorak are 3,500 won for adults, 1,000 won for teenagers, and 500 won for children.
Early arrival is especially critical if you intend to ride the cable car. Tickets for the Seoraksan Cable Car cannot be reserved in advance and are sold only on the day of travel at the on-site ticket counter. There are many tourists on weekends, public holidays, and during the fall foliage season, so visitors taking the Seoraksan Cable Car are advised to plan ahead. The cable car operator announces its exact daily operating hours on its official website one day prior, allowing you to check departure times the evening before your trip.
If you travel from Seoul by public transit, intercity buses run from Dongseoul Terminal to Osaek Bus Terminal in Yangyang in 2 hours and 30 minutes. Basing yourself in Sokcho for a week or longer makes early mornings simple, allowing you to hail a quick taxi or catch a local bus to the trailheads at dawn before day-tripper crowds arrive from the capital.
Frequently asked questions
What are the exact peak foliage dates for Seoraksan?
Peak foliage at Seoraksan usually occurs between October 20 and October 25. First colors typically show around late September or early October near the highest ridgelines. Because exact peak timing fluctuates slightly year to year based on autumn temperatures, checking the annual forecast published in September gives you the most reliable window for vibrant colors.
Can I buy tickets for the Seoraksan Cable Car in advance?
You cannot buy tickets in advance. Cable car tickets must be purchased on the same day at the ticket office inside Outer Seorak. During the peak autumn weeks of October, tickets often sell out quickly for preferred time slots. Arriving before 07:30 allows you to secure an early morning ticket and minimize queueing time.
What is the easiest trail to view autumn colors at Seoraksan?
Starting at the Yaksuteo Information Center near Osaek, the 3.2-kilometer walk follows a gentle valley with wooden boardwalks and takes about one hour one way. It offers sweeping views of colorful leaves framing dramatic rock formations without requiring steep climbing.
How much does admission and parking cost at Outer Seorak?
Park entry fees for Outer Seorak are listed as 3,500 won for adults, 1,000 won for teenagers, and 500 won for children. Peak season parking for small vehicles is 5,000 won for the day, while regular parking at the cable car area is 6,000 won. Remember to bring local payment methods since fees are collected upon arrival at the parking gates.
Updated 15 November 2026
Sources
- VisitKorea: Official foliage forecasts published on VisitKorea confirm that Seoraksan begins changing colors in late September or early October, reaching its peak foliage around October 20–25 Korea's official autumn leaf forecast is issued annually in early September via Korea Tourism Organization (VisitKorea) and weather agencies First foliage generally starts around late September to early October (e.g., October 3), with peak conditions typically spanning October 20 to October 25
- VisitKorea: Official foliage forecasts published on VisitKorea confirm that Seoraksan begins changing colors in late September or early October, reaching its peak foliage around October 20–25 Korea's official autumn leaf forecast is issued annually in early September via Korea Tourism Organization (VisitKorea) and weather agencies First foliage generally starts around late September to early October (e.g., October 3), with peak conditions typically spanning October 20 to October 25
- Seoraksan Cable Car: **Outer Seorak (Seorak-dong / Sokcho side):** The primary gate for general tourists and long-stay visitors based in Sokcho It provides access to Sinheungsa Temple, Ulsanbawi Rock, Biseondae Rock, and the Seoraksan Cable Car leading up to Gwongeumseong Fortress During peak foliage in October, visitor traffic builds up heavily early in the morning Arriving before 07:00–07:30 at the Seorak-dong gate is strongly recommended to beat road gridlock along Seoraksan-ro, secure parking, and avoid extensive waits for cable car tickets (which must be purchased same-day on site)
- Outer Seorak: **Outer Seorak (Seorak-dong / Sokcho side):** The primary gate for general tourists and long-stay visitors based in Sokcho It provides access to Sinheungsa Temple, Ulsanbawi Rock, Biseondae Rock, and the Seoraksan Cable Car leading up to Gwongeumseong Fortress National park trail entry opens as early as 03:00–04:00 Arriving before 07:00–07:30 at the Seorak-dong gate is strongly recommended to beat road gridlock along Seoraksan-ro, secure parking, and avoid extensive waits for cable car tickets (which must be purchased same-day on site)
- VisitKorea: **Southern Seorak (Osaek / Yangyang side):** Houses the Yaksuteo Information Center and leads along valley boardwalk trails like Yongsopokpo, as well as the steep ascent to Daecheongbong Peak
