The Icelandic 1. deild, also known as the First Division, is the second tier of professional football in Iceland. It features clubs that compete for promotion to the top league, the Úrvalsdeild. The league typically consists of 12 teams, and the season runs from spring to autumn. Teams in the Icelandic 1. deild play each other in a round-robin format, with each club facing every other club twice. The top teams at the end of the season earn promotion, while the bottom teams may face relegation to the lower division, the 2. deild.