The road runs from Palojärvi, Vihti to Mäntyluoto, Pori.

National road 2 has a short part of motorway on its starting place and it is only 1 kilometer long and that means it is the shortest motorway in Finland and National road 2 has another bypass in Pori which is about 7 kilometers long.

When it was completed, it was found too dangerous between Helsinki's Ring III and Vihti's Olkkala, so it was rebuilt again between Ring III and Olkkala in the 1970s, new line built from National road 1 and it is little longer but safer line than an old one.

Later the only dangerous part between Olkkala and Karkkila was built to become a 2+1 or 1+2 laned road.

Media related to National road 2 (Finland) at Wikimedia Commons