A mil in Norway and Sweden is a distance of 10 kilometres.
The term originates from a pre-metric mil (in earlier times rast) of slightly over 10 km, denoting a suitable distance between rests when walking.
For geographical distances the term is used probably more than the kilometre. It is also used commonly for measuring vehicle fuel consumption, liters per mil means liters consumed per 10 km.
In angular measure, a mil is 1/6,400 of a full circle; thus, there are 160 mils in 9 degrees, 17.8 mils in one degree. This mil is usually used in artillery discussion.