Shanghai vs Seoul Marathon — Which Should You Run?
Compare the Shanghai and Seoul Marathons side by side — course profile, weather, field size, qualification, and atmosphere to help you choose your next race.
Quick Comparison
| Feature | 2026 Shanghai Marathon - Dec 6 | 2026 Seoul Marathon - Mar 15 |
|---|---|---|
| Country/Region | China | South Korea |
| Month | November | March |
| Avg Temperature | 12-18°C | 5-12°C |
| Course Type | Flat | Flat |
| Elevation | ~20m | ~30m |
| Field Size | 38,000 | 25,000 |
| Entry | Lottery | Open |
| World Major | No | No |
| BQ Course | Yes | Yes |
| Crowd Support | Good | Good |
Detailed Comparison
Shanghai and Seoul are two of East Asia's largest city marathons, each offering a fast, mostly flat course through a world-class metropolis. Shanghai runs in November with comfortable temperatures (12-18°C) and a flat course (~25m elevation) through the Bund, Nanjing Road, and Pudong skyline. Seoul takes place in March with cooler, sometimes brisk conditions (4-12°C) and a mostly flat route (~50m elevation) along the Han River.
Both marathons attract approximately 35,000-38,000 runners. Shanghai uses a lottery system, while Seoul offers open registration with optional time-qualifying tiers for preferred starting corrals. For runners seeking a guaranteed entry without lottery uncertainty, Seoul is the easier path. Use the Pace Calculator to determine your target splits for either flat course.
Culturally, the experiences are distinct. Shanghai delivers a modern skyline spectacle — running past the Oriental Pearl Tower and through the French Concession is visually stunning. Seoul's course along the cherry-blossom-lined Han River in early spring offers natural beauty, with the historic Gwanghwamun gate area adding cultural depth. For autumn racing in a dynamic Chinese megacity, choose Shanghai. For a spring marathon with scenic riverside running and easier entry, Seoul is the smart pick.
Explore Each Marathon
2026 Shanghai Marathon - Dec 6
Live countdown, race info, and training tools.
View Countdown →2026 Seoul Marathon - Mar 15
Live countdown, race info, and training tools.
View Countdown →Frequently Asked Questions
Which is faster, Shanghai or Seoul Marathon?
Shanghai features a flat course while Seoul has a flat profile. The Seoul course is generally well-suited for fast times.
How do I enter the Shanghai Marathon vs Seoul Marathon?
Shanghai Marathon uses a Lottery entry system with a field of 38,000 runners. Seoul Marathon uses Open with 25,000 spots. Plan your entry strategy using our Marathon Lottery Calculator.
What is the best weather for running, Shanghai or Seoul?
Shanghai in November averages 12-18°C. Seoul in March averages 5-12°C. Use our Dew Point Calculator and Heat Adjustment Calculator to plan for race-day conditions.
Can I qualify for Boston at Shanghai or Seoul?
Both the Shanghai and Seoul Marathons are BQ-eligible courses. Use our Pace Calculator to determine your BQ target pace.
Which marathon has better crowd support?
Shanghai is known for good crowd support, while Seoul offers good spectator atmosphere. Both races create memorable experiences. Plan your spectator strategy with our Spectator Planner.
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