Day trip from Ansan-si to Osan
Osan lies 29 km (18 mi) south-east of Ansan-si, in the same time zone. What the numbers say about getting there.
At 29 km (18 mi) apart, Osan is a realistic day trip from Ansan-si: about 28 min each way by road.
| Ansan-si | Osan | |
|---|---|---|
| Country | South Korea | South Korea |
| Population | 623,256 | 238,788 |
| Elevation | 15 m (49 ft) | 22 m (72 ft) |
| Time now | UTC+9 (Asia/Seoul) | UTC+9 (Asia/Seoul) |
Where to book tours and tickets in Osan
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Staying in Osan
Live rooms and prices for Osan are in the search below.
Book a hotel in Osan
Live rooms and prices from our booking partner, booked and paid for here. Free cancellation is marked where it applies.
Common questions
How far is Osan from Ansan-si?
29 km (18 mi) in a straight line, south-east of Ansan-si; by road roughly 36 km (22 mi).
How long does it take to get from Ansan-si to Osan by road?
About 28 min, estimated from distance and typical speeds. Timetables and traffic decide the real figure.
Is there a time difference between Ansan-si and Osan?
No, both are on Asia/Seoul at the moment.
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 14 September 2026. Hotel and hostel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.