21.1 km
5:40 /km
Han both banks.
City, flat, riverine.
One of the oldest Asian marathons (est. 1931). Han River to Jamsil Stadium.
Because uninterrupted rhythm is medicine — this course lets the body forget the clock.
Bridges are checkpoints; return to breath at every one.
A rolling profile — mid-race climbs ask for shorter strides, not harder efforts.
Kind shoulder-season conditions — mild mornings, arm-sleeves off by kilometre eight for most runners.
A warm regional start — clubs in matching kit, coffee vans, a local mayor with a microphone. Human-scale and unhurried.
Steady, generous local support along the main boulevards and finish straight; genuine strangers-turned-friends handing out orange slices in the suburbs.
Water sections between km 18 and km 24 thin the crowd — breathe long, let the current pace you.
Sealed city tarmac — closed to traffic on race day
Rolling road profile — handcycles handle it with pacing help. Suitable for sturdy strollers on the flatter first and last thirds; expect a couple of longer gradients in the middle.
Han riverside walk, warm juk.




5:40 /km
Han both banks.
6:20 /km
Namsan base loop.
4:20 /km
Fast river PR.
Soft, restorative · step-free, wheelchair friendly
Only forward · run with the land
Forest-grounded · deeper trails, longer days
Long, open lines · quiet lanes, long horizons
Shared maps · shared GPX engine · shared Soul Signature language. Whichever door you enter, the craft standard is the same.