Between 22 and 26 games (depending on group size) were played in 12 groups, with 3 points given for wins and 1 for draws. No group winners were promoted to the 2. divisjon; instead the number of teams in the 3. divisjon was harshly reduced to make it a new tier of regional groups. Up to 9 teams from groups of 12 were relegated, making the 2017 4. divisjon the new highest tier of locally constituted groups.
On 19 September 2016, Erling Haaland became the youngest hat-trick scorer in the history of Norwegian football after scoring a hat-trick in Bryne's away 5–3 win over Haugesund 2 in the Group 6, at the age of 16 years and 2 months.
Updated to match(es) played on 28 October 2016. Source: nifs.no Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (R) Relegated
Updated to match(es) played on 28 October 2016. Source: nifs.no Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (R) Relegated