The Race Seoul 21K

About the Event

Experience the high-octane energy of the South Korean capital at The Race Seoul 21K, the city's premier running event scheduled for April 5, 2026. Setting the standard for modern running culture, this representative competition invites 15,000 athletes to traverse the heart of Seoul, starting from the historic Gwanghwamun Square. With a focused selection of Half Marathon and 10km courses, the event is designed to provide a fast, professional, and competitive environment for seasoned runners while fostering a healthy, inclusive community for all. Participants can aim for personal bests on a world-class urban route that showcases the dynamic blend of Seoul’s ancient heritage and futuristic skyline.

The 2026 edition features an elite "Leaders and Challengers" group system, ensuring that high-performance runners with verified sub-90 minute half marathon records can start at the front for a clear, competitive path. Organized by Spomax Korea, the event emphasizes a premium participant experience, including pre-order souvenirs, official timing chips, and an expansive event village at Gwanghwamun. Beyond the race itself, the festival atmosphere includes a comprehensive opening ceremony, guided stretching sessions, and a prestigious awards ceremony on the main stage. As a central fixture in the Asian running calendar, The Race Seoul 21K offers an unparalleled opportunity to run through the cleared streets of one of the world's most vibrant metropolises.

Metric	The Race Seoul 21K Details
Event Date	April 5, 2026 (Sunday)
Start Time	07:30 AM
Total Participant Capacity	15,000 (5,000 Pre-reg \| 10,000 Main)
Race Venue	Gwanghwamun Square, Seoul
Seoul Population (City)	~9.4 Million Residents
Demographics of South Korea	Korean (96%), Foreign Residents (4% including Chinese, Vietnamese, Thai)

Registration for this prestigious event operates on a strict first-come, first-served basis, with the application window typically opening in late January. Each runner receives a comprehensive kit including official performance apparel and exclusive finisher medals. The Race Seoul 21K is more than just a competition; it is a movement towards a more active lifestyle, supported by major sponsors and the city’s enthusiastic sporting community. Join thousands of local and international runners to claim your place on the starting line at Gwanghwamun and experience the ultimate urban race.

Races Offered

10km

Apr 05, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

07:00

sell

$31.00

21km

Apr 05, 2026

straighten

Distance — 21K

terrain

Type — Running

timer

07:00

sell

$35.00

Weather Overview

These values represent the 3-year monthly averages for April in Seoul.

Temp (°C)

Feels Like (°C)

thermostat 7.8° / 18.5°

wb_sunny 5.1° / 15.3°

Wind (km/h)

Humidity (%)

air 9.6 /

water_drop 66.1%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 7.8° / 18.5°

wb_sunny 5.1° / 15.3°

air 9.6 km/h

water_drop 66.1%

About Seoul

Learn more about the host city, Seoul.

Seoul (서울) is the capital of South Korea. With a population of over 9 million, Seoul is by far South Korea's largest city and one of East Asia's financial and cultural centers. A fascinating blend of ancient traditions and cutting-edge digital technology, home to endless street food vendors and vast nightlife districts, an extraordinarily high-pressure educational system and serene Buddhist temples, a dynamic trend-setting youth culture and often crushing conformism, extraordinary architecture and endless monotonous rows of grey apartment buildings, Seoul is a city filled with stark contrasts, contradictions, and paradoxes. People in Seoul can enjoy various artistic activities such as plays, musicals, and concerts.