Short answer: the closest point of the DMZ is about 52 km north of Seoul city centre, and a tour bus typically reaches it in 60 to 75 minutes depending on traffic.
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Distance to the main DMZ sites
- Imjingak Park — 52 km / 1 h drive from Seoul Station
- Third Infiltration Tunnel — 60 km / 1 h 15 from central Seoul
- Dora Observatory — 64 km / 1 h 20
- JSA / Panmunjom — 55 km in a straight line, but via the controlled access route, allow 1 h 30
How tour buses get there
Most operators take the Jayu-ro (Freedom Highway) which runs along the Imjin River, with Han River views and barbed-wire fences for the last 20 minutes. Traffic is light early morning; if you’re booking transport on your own, leave by 7 am.
Going by public transport (without a tour)
You can reach Imjingak by Gyeongui–Jungang line train + DMZ Train, but you cannot enter the controlled DMZ zones beyond it without a registered tour operator. So even doing the journey « yourself » leaves you 30 minutes short of the actual sights.
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