By Rail
Trains between Oslo and Kristiansand passes Kongsberg. There is 23 trains a day between Oslo and Kongsberg.
By car
By car
Kongsberg is situated on the E134 highway. Driving distance from Oslo is about 1 hour and 15 minutes. E134 continues in westward to Notodden, and over the mountain to Haugesund. Or road 40 towards Geilo.
By plane
By plane
Oslo Airport Gardermoen (http://www.osl.no) IATA: OSLDriving distance: about two hour.
Sandefjord Airport Torp (http://www.torp.no/) IATA: TRF
By bus
By bus
"Timekspressen" Bus between Oslo and Notodden passes Kongsberg, every hour, every day.