Stays · Destination Guide
Sweden's marine national park: cool-water diving, interpreted snorkel trails and island life
Accommodation listings are not available for this destination yet. Use the local planning notes to choose your base.
The standard arrival is by land to Stromstad on Sweden's west coast, then a passenger ferry from Norra Hamnen to a Koster pier. Kosterlinjen has operated the service on Vasttrafik's behalf since the September 27, 2026 timetable change. The normal crossing is approximately 40-60 minutes depending on the landing quay. Check line 899 and, in the summer period, additional 898 for Ekenas/Kilesand. Current operator; 2026 service change.
Gothenburg Landvetter (GOT) is a practical Swedish international airport for onward rail/bus or car travel. Oslo Gardermoen (OSL) is a Norwegian alternative with onward road or public transport via the border; Sandefjord/Torp (TRF) can be considered with a separate Sandefjord-to-Stromstad ferry crossing. These are access choices, not claims of nonstop flights or fixed airport transfer times. Regional transport information; Color Line Norwegian crossing.
2026 disruption: From April 20 through December 12, 2026, trains are replaced by buses on an affected northern Bohus railway section toward Stromstad. Search Vasttrafik for the entire route and allow flexibility before an onward Koster sailing. .
Salto, Rosso and Reso mainland park entrances can also be reached by road or regional public transit, a useful no-ferry option for visiting park scenery or the Hasslebukten snorkeling trail. National park visitor access.
On the Koster islands, travel is primarily on foot and by permitted bicycle. The park and adjacent reserve prohibit cycling off roads.