The Best Two Weeks to Run Are Late September to Mid-October! Seoul’s Four Autumn Routes—the Han for Night Runs, 5.8 km of Cheonggyecheon Through the Centre, Hills on the City Wall, Loops in Olympic Park, Plus Lockers, Changing and a Bath

People who run while travelling see a city twice. Once as a visitor, once at the speed of someone who lives there. Seoul is unusually good at the second one.

The reason is simple: there is a river. The paths along both banks of the Han run for tens of kilometres without a break, and nothing stops you—no traffic lights, no crowds. Not many capital cities let you run that far in a straight line.

“What do I need to know first?” Here’s the thing: where the lockers are, whether the fountains work, how much of the route is lit, and how far the temperature drops between morning and midday. That is what this piece is for. Let’s get into it.

Hangang Park Is the Default Answer! Lighting, Toilets and Water

✔ Distance markers are painted on the path
From Yeouido down to Banpo the riverside path is fully paved, with separate lanes for runners and cyclists. Distance markers for 5 km, 10 km and half marathon are painted on the surface, so you can hold a pace without looking at your watch.

It is lit at night, and people are still out running around ten. If you want the one route where running alone after dark is reasonable, this is it. Come up from Yeouinaru station on Line 5 and you are already at the start.

There are drinking fountains in the park, though not all of them are running. Convenience stores sit along the river, so carrying a 500 ml bottle from the start is the safer plan.

✔ Here’s the question that comes next. “The Han River Script—Ramyeon, Chicken and a Sunset” picks up right where this leaves off.

No Waiting at Lights! Cheonggyecheon, 5.8 km Through the Middle of the City

✔ A level below the road
The stream path runs east from near Gwanghwamun. It sits a level below the road, so there is no traffic and no waiting at lights. One way is about 5.8 km, which makes the round trip close to 12 km.

The catch is width. After late afternoon it fills with people walking. Treat it as a route for looking at the city rather than one for intervals.

Climb any staircase and you are back in the commercial centre. Being able to walk straight from the end of a run into dinner is something no other route here offers.

Short, but Your Legs Will Know! The City Wall and the Parks, If You Want Hills

✔ The whole city opens up near the top
When flat gets dull, run the wall from Naksan Park toward Hyehwa. It climbs and drops along the stonework, and although the distance is short your legs will know about it. Near the top the whole city opens up below you.

The surface mixes flagstones and steps, so wear something cushioned. Parts of it are poorly lit, which is a reason to go before sunset.

The other option is Olympic Park, where a loop comes to about 3 km. A loop also means your bag can stay in one place while you run past it.

Bag in a Subway Locker! Before and After: Lockers, Changing, and a Bath

✔ A small locker costs a few thousand won
Subway stations have coin lockers, most operated with a transport card or credit card, and a small one costs a few thousand won. Placement differs by station, so check the signs both inside and outside the gates.

Changing usually means a park toilet. Do not expect a changing room. The practical version is to leave your accommodation already dressed to run, then pull a jacket on for the way back.

If you want a bath afterwards, a jjimjilbang is the answer. Many are open around the clock and entry starts in the ten-thousand-won range. Shower, then go straight to dinner, and the day has gained an extra chapter.

FAQ

Is late September too warm for running in Seoul

Mornings fall to around 15-20C. Daytime can still pass 25C, but early morning and evening are comfortable.

Can I take the subway in running clothes

Yes. Trains toward Hangang Park in the morning and evening are full of people dressed the same way.

What should I do about water

Fountains are not reliably switched on, so buying a bottle at a convenience store and carrying it is the safe approach. There are stores along the river too.

Is it safe to run at night

Hangang Park and Olympic Park are lit and busy. The city wall route has dark stretches, so go before sunset.

Where can I leave my bag

A subway coin locker is easiest. On a loop route, some people leave a bag in the shade and keep it in sight.