The club has won the Faroe Islands Cup in 1986 and 2002. Aside from these instances, NSÍ Runavík featured in the 1980, 1985, 1988, 2004 and 2015 tournament finals.
The club plays in yellow and black. Their stadium (Við Løkin) has a capacity of 2,000. It is not approved by UEFA for international play, so Runavík play their UEFA Europa League matches at Tórsvøllur in Tórshavn or Svangaskarð in Toftir. The main sponsor of NSÍ is Bakkafrost, which is based in Glyvrar near Runavík and is the largest salmon farming companies in the Faroe Islands and is one of the biggest private employer in the islands, if not the biggest.