This bachelor’s thesis aims to reconstruct the coastal road of northern Sweden during the Finnish war 1808–1809. The thesis purpose is also to discuss what kind of archaeological remains can be found in northern Sweden from the war 1808-1809 and if the archaeological remains are vulnerable to future exploitation. Reconstruction of the road and mapping of the archaeological remains are done through an ArcGIS-analysis, where past conditions such as soil type and postglacial rebound are studied. The old coastal road was used by the military in 1808-1809 to move troops and shipments between different coastal settlements and cities. Today, large parts of the old coastal road are overlapped by highway E4, but some parts remain. A good number of archaeological remains from the war 1808-1809 can be found along the coastal road and there is a high concentration of remains around Sävar, Umeå and Kalix. The largest upcoming and ongoing project in northern Sweden is the construction of the railway “Norrbotniabanan” between Umeå and Luleå. This type of exploitation has showed to interfere with parts of the old coastal road, as well as some of the archaeological remains from the war 1808-1809.