Seoul International Marathon (Dong-A)
Seoul, South Korea · March · World Athletics Label
Why people love it
- Start at Gwanghwamun Plaza and finish inside the Olympic Stadium at Jamsil.
- Flat: 93 m (305 ft) of gain; Boston qualifier and World Athletics Platinum Label.
- Subway lines reach Jamsil, 150 m (500 ft) from the stadium.
- Water and sports drink every 5 km (3.1 mi); gels at 20, 30 and 35 km (12, 19, 22 mi).
- Few athletes have written about the run, so recent detail is thin.
Watch out for
- Starts are 2 to 4 °C (36 to 39 °F); bring throwaway layers.
- Jamsil Bridge at 34 to 35 km (21 to 22 mi) climbs into a headwind.
- Bag trucks closed 30 to 45 minutes before the start in past years.
- Entry needs a sub-5 hour marathon certificate and sells out quickly.
- Spring yellow dust can affect air quality.
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 28% of the overall score.
Toughness: Moderate
- Racer satisfactionLoved3.6
Few modern runner reviews. RaceRaves has 2 (3.5 average) and MarathonGuide 1 (2.0). Complaints centre on sign-up and start-area chaos. · Low confidence
- OrganizationAdequate3.3
Race day reads smooth, with easy packet pickup, but one runner found sign-up confusing and bag trucks closed 30 to 45 minutes early. · Low confidence
- First timer friendlyDoable3.1
Flat and well supported, but one guide gives a 5 hour cutoff, last waves wait an hour in the cold, entry needs a sub-5 certificate. · Low confidence
Course traits, not part of the score
- PR potentialFast3.9
Only 93 m (305 ft) of gain and a Platinum Label. Cold starts help; early weaving and a bridge headwind cost time. · Low confidence
Course
Scenery, road surface, closures, and room to run. Counts for 20% of the overall score.
- Course sceneryBeautiful4.0
Gwanghwamun, Gyeongbokgung, Cheonggyecheon, Han River bridges and an Olympic Stadium finish. One 2024 reviewer found stretches not very scenic. · Low confidence
- Room to runSome pinch points3.3
A 2019 runner spent the first 16 km (10 mi) weaving. The Cheonggyecheon section is narrower. · Low confidence
- Road surfaceGood4.2
Asphalt on broad avenues per guides. Reviews had no complaints. · Low confidence
- Road closuresFully closed4.5
Central Seoul roads are closed from early morning to mid-afternoon, and the Korea Herald reports citywide closure fatigue. · Medium confidence
Course traits, not part of the score
- Course flatnessPancake flat4.6
Guides show 81 to 93 m (265 to 305 ft) of gain, with one main bridge. · Medium confidence
- Net downhillEven3.0
Point-to-point but essentially flat. Boston qualifier, no net drop. · Medium confidence
Support
Crowds, aid stations, the start, and pacers. Counts for 20% of the overall score.
- Start logisticsSome waiting2.8
In 2019 bags closed at 7:30 and last waves stood over an hour in the cold. Toilet shortages were reported in 2017 and 2019. · Low confidence
- Pacers and timingGood3.6
Chip timing on net time and fast results. Pace group detail not confirmed. · Low confidence
- Crowd supportDecent3.3
Guides say fewer spectators than Tokyo or Boston. One reviewer found it small for the size, another found many cheering locals. · Low confidence
- Aid stationsStandard3.4
Water and sports drink every 5 km (3.1 mi), gels at 20, 30 and 35 km (21.7 mi). A 2023 reviewer reported too few toilets. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 14% of the overall score.
- WindSome wind3.2
Exposed headwind on Jamsil Bridge at 34 to 35 km (21 to 22 mi); otherwise sheltered by buildings. · Low confidence
- Air temperatureWarm or cool3.4
Starts of 2 to 4 °C (36 to 39 °F) warming to about 10 °C (50 °F). Cold waits, and March dust is a risk. · Low confidence
- Weather reliabilityVariable3.2
2025 was cold and wet, 2026 favourable. Yellow dust is possible and humidity runs about 74% in race week. · Low confidence
- Spectator friendlyEasy4.2
A RaceRaves reviewer says the subway reaches many viewing points along the route. · Low confidence
Course traits, not part of the score
- Low altitudeSea level5.0
Seoul sits at about 38 m (125 ft) above sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityPlentiful4.6
Seoul is a large hotel market, with areas at both ends of the course. · Medium confidence
- Hotel valueGood3.5
Mid-range Seoul rates, and mid-March is busier. No race-week prices found. · Low confidence
- WalkabilityWalkable4.2
Subway lines 2 and 8 reach Jamsil, 150 m (500 ft) from the stadium. Gwanghwamun hotels are a walk from the start. · Medium confidence
- Travel easeEasy4.2
The AREX airport train takes 45 to 60 minutes to central Seoul. · Medium confidence
- LogisticsSome complexity3.2
Bib pickup in person at the expo with passport. Bags are dropped at the start and bussed to the finish, with a strict cutoff. · Low confidence
- Town and foodGreat4.7
Seoul has plenty to eat and see before and after the race. · Medium confidence
Entry
How hard it is to get a place, and what you get for the fee. Counts for 8% of the overall score.
- Getting inHard2.4
Sells out fast and needs a sub-5 hour certificate. Earlier years used a capped lottery. · Low confidence
- Value for moneyFair3.4
About $150 entry. A 2024 reviewer called the medal bland; packet pickup is easy. · Low confidence
Key facts
- Location
- Seoul, Seoul, South Korea
- Typical month
- March
- Latest or next date
- 21 March 2027
- Organiser
- World Athletics Label
- Field size
- About 20,000 athletes
- First held
- 1931
- Distances
- 42.2 km (26.2 mi)
- Course type
- point-to-point
- Climbing
- 93 m (305 ft)
- Start time
- 07:30
- Cutoff
- 5 hours
- Boston qualifier
- Yes
- Surface
- Asphalt, broad straight avenues
- How to get in
- qualifier
- Sells out
- Yes
- Entry fee
- About $150
- Air temperature
- 2–10 °C (36–50 °F)
- Humidity
- About 74% race week; yellow dust season runs March to May
- Altitude
- 38 m (125 ft)
- Nearest airport
- Incheon (ICN); Gimpo (GMP) is closer, 55 km (34 mi) away
- Where to stay
- Gwanghwamun (walk to start), Jamsil (near finish)
- Booking
- Book 3 to 4 months out; the race is mid-March.
What racers and reviewers say
- MarathonGuideRaced 2019 · aggregator · Mixed
Raced 2017 and 2019 and rated it 2.0. Found the course flat but bland and concrete-heavy, the start plaza crowded with too few toilets, and baggage trucks closing 30 to 45 minutes early. Called the later lottery confusing.
“The course is very flat, though, which can be a boon.”
- RaceRavesRaced 2024 · aggregator · Mixed
Two reviewers disagree. One (2024) found the flat course not scenic, crowds small and sign-up confusing, but packet pickup easy and aid every 5 km (3.1 mi). One (2022) found many cheering spectators, a tough route with bridges and turns, and easy subway viewing.
- Wellesley student blogRaced 2019 · blog · Positive
First-time marathoner in 2019. Dropped bags by 7:30, then waited over an hour in the cold before crossing the line at 8:30 as part of the last group. Spent about the first 16 km (10 mi) weaving through other runners; finish inside the Olympic Stadium felt great.
“it was such a good feeling when I finally crossed the finish line”
- Army.mil featureRaced 2014 · article · Positive
54 soldiers ran in 2014 with a field above 44,000 starting downtown at Gwanghwamun and finishing at Jamsil Olympic Stadium. First-timers were overwhelmed at the finish.
“I couldn't believe I had accomplished something like this.”
- RundidaRaced 2026 · article · neutral
2027 guide. 93 m (305 ft) of gain, 7:30 gun, 5 hour limit, water and Pocari Sweat every 5 km (3.1 mi), gels at 20, 30 and 35 km (12, 19, 22 mi). Warns of 2 to 4 °C (36 to 39 °F) starts, a headwind on Jamsil Bridge and lower spectator density than Tokyo.
Show 3 more
- FinishersRaced 2026 · article · Positive
Preview calls the race dense and disciplined with timed aid stations, spectators along the route and a flat fast profile (81 m (266 ft) / 265 ft gain). Entry is first come with a sub-4:59 certificate; international entries rose 70% in 2026.
- Marathon IndexRaced 2026 · article · Positive
Calls the course flat along the Han River and rates it easy for first-timers, with a 7 hour time limit and an unofficial 4:28 typical finish. Notes entry sells out quickly.
- Korea Herald via Asia News NetworkRaced 2025 · article · Mixed
Describes citizen frustration with near-weekly road closures in central Seoul for races of about 30,000 runners, with 461 complaints in 2024. Shows closures are real but politically contested.
Raced Seoul International Marathon (Dong-A)? Your notes on the course, conditions and logistics help the next athlete decide.
Sources
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