The road is 82.7 kilometres (51.4 mi) long and 26.1 kilometres (16.2 mi) of it lie in the former Oppland county and 56.6 kilometres (35.2 mi) of it lie in the former Hedmark county.

The road runs through Folldal, Stor-Elvdal, and Ringebu municipalities.

The northern part of this road in Folldal and Stor-Elvdal is classified as a national tourist route.

[1] Historically, County Road 27 went from Folldal to Enden (in Stor-Elvdal) and then turned east through Sollia and headed to Atna where it ended.

At that time, the stretch of road between Enden and Ringebu was called National Road 220.