2010 Norwegian First Division
The Adecco Ligaen 2010 was the sixth season of the second highest football league under the name Norwegian Adecco Ligaen. The season started on April 5 and ended on November 7. First and Second ascended to the Tippeligaen. The third - to fifth-placed played a playoff with the third-bottom of the Tippeligaen. The last four teams dismounted.
This Hønefoss BK is relegated after only one year. Fredrikstad FK managed direct resurgence.