Alternatively a passage through Sande was proposed, although fourteen different routes were proposed. Three main ones were the inner, outer and combined coastal alternatives. The outer followed the shore of the Oslofjord, would be and would run through Holmestrand, Horten and Åsgårdstrand before reaching Tønsberg. The combined and inner would be , respectively, and both involved building a branch line to Horten. A major argument against the coastal route was that the towns already had a good steamship service, with services several daily departures. A third major alternative was to bypass the coast altogether and build a connection from the Kongsberg Line at Skollenborg Station down the valley of Lågendalen to Larvik. The main advantage of this alternative was the large potential for hydroelectricity along Numedalslågen.